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| Metazoa | ||
| Metazoa | Taxa |
| Life | Time |
|
Life
├─Eubacteria
└─┬─Archaea
└─Eukarya
├─Chlorobionta
└─┬─Fungi
└─Metazoa
├─Choanoflagellata
└─Porifera
├─Radiata
└─┬─Cnidaria
└─Bilateria
├─Deuterostomia
└─Protostomia
├─Ecdysozoa
└─Spiralia
|
|
Editor's note
This page is in the process of being revised, but is posted as is for now as a holding page and to provide links to other pages. Because Palaeos is still under construction and major revision, not all links given here work. MAK120115
Acaenoplax: (Mollusca: Solenogastres) see Solenogastres.
Acantherpestes: X (Arthropoda: Myriapoda).
See Myriapoda.
Acanthocephala: (Ecdysozoa?).
See Bilateria.
Acanthochaetetes: (Porifera: Demospongiae), see Stromatoporoidea.*
Acaroceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Acfinosfromaria: X (Porifera: Stromatoporoidea?), see Stromatoporoidea.
Acila: (Mollusca: Bivalvia), see Bivalvia Shell.
Acleistoceratidae: X? (Mollusca: Cyrtosoma: Nautiloidea). See also, Nautilida.
Acmacoidea: (Mollusca: Gastropoda: Patellogastropoda).
Acmaea: (Mollusca: Gastropoda: Patellogastropoda), see Patellogastropoda.
Acmaeidae: (Mollusca: Gastropoda: Patellogastropoda).
Acoela: (Acoelomorpha)
See Bilateria.
Acoelomorpha:
See Bilateria, Hox Genes.
Acrotheloidea: X (Lophotrochozoa: Brachiopoda: Linguliformea), see Discinida.
Acrotreta: X (Lophotrochozoa: Brachiopoda: Linguliformea) see Acrotretida.
Acrotretida: Lophotrochozoa: Brachiopoda: Linguliformea).
Acrotretoidea: X (Lophotrochozoa: Brachiopoda: Linguliformea)
see Acrotretida.
Actinoiceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Actinocerida: X (Mollusca: Cyrtosoma: Cephalopoda).
Actophila: (Mollusca: Pulmonata)
Agathylla: (Mollusca: Pulmonata), see Stylommatophora.
Aglaspida: X (Arthropoda: Chelicerata?)
see Xiphosura.
Ajacicyathida: X (Porifera: Archaeocyatha) see Archaeocyatha, Irregulares.
Ajacicyathina: X (Porifera: Archaeocyatha) see Archaeocyatha.
Aldanella: X (?), see Gastropoda.
Aldanellidae: X (?), see Paragastropoda.
Allonia: X (Porifera: Chancelloriidae), see Porifera*.
Ambulacraria:
see also Deuterostomia.
Ammonoidea: (Mollusca: Cyrtosoma: Neocephalopoda)
Amphibolida: (Mollusca: Pulmonata), see Basommatophora.
Amphidiscophora: (Porifera: Hexactinellida), see Hexactinellida.
Amphimedon: (Porifera: Demospongiae) see Porifera*
"Amphineura": (Mollusca), see Polyplacophora.
Amphipora: X (Porifera: Stromatoporoidea.
Amynilyspes: X (Arthropoda: Myriapoda). See Myriapoda.
Angulospira: X (Mollusca: Gastropoda: Paragastropoda), see Atracurinae.
Anatina: (Mollusca: Bivalvia), see Bivalvia Shell.
Anodonta: (Mollusca), see Bivalvia.
Anomalocystis:
X (Homalozoa: ?) see Homalozoa
Anomalodesmata: (Mollusca), see Bivalvia. See also, Bivalvia Dendrogram.
Anomia: (Mollusca: Bivalvia), see Bivalvia Shell.
Anthozoa: (Cnidaria). See also Hox Genes.
Antigyra: X (Mollusca: Gastropoda: Paragastropoda), see Atracurinae.
Antispira: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Antizyga: X (Mollusca: Gastropoda: Paragastropoda), see Atracurinae.
Aphetoceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Tarphycerina.
Aphrocallistes: (Porifera: Hexactinellida), see Hexactinellida*.
Apoptopegma: X (Mollusca: Rostroconchia), see Ribeirioida.
Arca: (Mollusca: Bivalvia), see Bivalvia Shell.
Arceodomus: X (Mollusca: Rostroconchia), see Conocardioida.
Archaeocyatha: X (Porifera). See also, Stromatoporoidea
Archaeocyathida: X (Porifera: Archaeocyatha) see Archaeocyatha.
Archaeocyathus: X (Porifera: Archaeocyatha) see Irregulares*.
"Archaeogastropoda": (Mollusca: Gastropoda) paraphyletic grade of basal crown gastropods. See Macluritoidea.
Archaeolynthus: X (Porifera: Archaeocyatha) see Irregulares*.
Archiacoceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Archiscudderia: X (Arthropoda: Myriapoda). See Myriapoda.
Arcoida: (Mollusca), see Bivalvia.
Arionoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Arkarua:
X Metazoa, incertae sedis)
Armenoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Artemia: (Crustacea: Branchiopoda) see Crustacea*.
Arthropoda: (Protostomia) See also Hox Genes.
Ascoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Ascoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda)
Ascocerida: X (Mollusca: Cyrtosoma: Neocephalopoda)
Aspinoceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Astrosclera: (Porifera: ?!Stromatoporoidea) see Archaeocyatha.*
Atelocerata: Hexapoda + Myriapoda. Identical to Euarthropoda here. See also, Myriapoda.
Athyridida: (Lophotrochozoa: Brachiopoda)
see Brachiopoda.
Atracura: X (Mollusca: Gastropoda: Paragastropoda), see Atracurinae.
Atracurinae: X (Mollusca: Gastropoda: Paragastropoda).
Atrina: (Mollusca), see Bivalvia.
Atrypida: (Lophotrochozoa: Brachiopoda)
see Brachiopoda.
Atta: (Insecta) see Bilateria.
Augustoceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Oncocerida.
Aulacera: X (Porifera: Stromatoporoidea) see Stromatoporoidea.*
Austrolimulidae: X? (Arthropoda: Chelicerata: Merostoma).
Autobranchia: (Mollusca), see Bivalvia.
Autolamellibranchia: (Mollusca), see Bivalvia. = Autobranchia.
Aviculopecten: (Mollusca: Bivalvia), see Bivalvia Shell.
Bactrites: X (Mollusca: Cyrtosoma: Neocephalopoda), see Bactritida.
Bactritida: (Mollusca: Cyrtosoma: Neocephalopoda)
Balkoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Plectronocerida.
Balkoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Baltoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Baltoeurypterus: X (Arthropoda: Chelicerata: Eurypterida), see Eurypterida.
Banffia: X (Deuterostomia?) see Vetulicolia.
Barrandeoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Barrandeocerina: X (Mollusca: Cyrtosoma: Nautiloidea).
Barroisella: X (Lophotrochozoa: Brachiopoda: Linguliformea) see Lingulida.
Basommatophora: (Mollusca: Pulmonata)
Bassleroceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Ellesmerocerida.
Bassleroceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Bathmoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Bellerophon: X (Mollusca: Gastropoda: Tergomya). See Bellerophontida. See also, "Bellerophontiforms".
Bellerophontida: X? (Mollusca: Gastropoda: Tergomya). See also Coreospiridae.
Bellerophontidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Bellerophontidea: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Bellerophontina: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Bellerophontoidea: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Bellinuridae: X (Arthropoda: Chelicerata: Merostoma).
Bellinurina: X (Arthropoda: Chelicerata: Merostoma).
Bellinuroopsis: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Bellinurus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Bigalea: X (Mollusca: Rostroconchia), see Conocardioida.
Bilateria: starfish + silverfish, not Deuterostomia + Protostomia. See also, Deuterostomia.
Billingsites: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Bivalvia: Mollusca).
Bodospira: X (Mollusca: Gastropoda: Paragastropoda), see Atracurinae.
Botsfordioidea: X (Lophotrochozoa: Brachiopoda: Linguliformea), see Discinida.
Brachiopoda: (Lophotrochozoa), see also Stromatoporoidea.
Brachiospongia: X (Porifera: Hexactinellida), see Hexactinellida*.
Brachiozoa: see Deuterostomia.
Branchiopoda: (Crustacea) see Crustacea.
Bransonia: X (Mollusca: Rostroconchia), see Conocardioida.
Brevicoceratidae: X? (Mollusca: Cyrtosoma: Nautiloidea). See also, Nautilida.
Bryozoa: see also Stromatoporoidea.
Bucanella: X (Mollusca: Gastropoda: Tergomya). See Bellerophontida.
Bucanellidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Bucaniidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Buddenbrockia: (Myxozoa) See Bilateria.
Bunodes: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Bunodidae: X (Arthropoda: Chelicerata: Merostoma)
Bunodinae: X (Arthropoda: Chelicerata: Merostoma)
Burgundia: X (Porifera: Stromatoporoidea?), see Stromatoporoidea.
Caenorhabditis: (Nematoda). See Hox Genes*.
Calcarea: (Porifera). See also Archaeocyatha, Demospongiae, Stromatoporoidea.
"Calcichordata": see Homalozoa
Cambretina: X (Mollusca: Gastropoda: Paragastropoda), see Pelagiellida.
Cambropodus: X (Arthropoda:
?Myriapoda)
Canpbelloceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Tarphycerina.
Capitella: (Annelida, Polychaeta) See Bilateria.
Carbactinoceratidae: X (Mollusca: Gastropoda: Paragastropoda)
Carcinoscorpius: (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Cardiomya: (Mollusca: Bivalvia), see Bivalvia Shell.
Carnicoelus: see also Solenogastres
Carinaropsidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Cassinoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Endocerida.
Castericystis: X (Deuterostomia: Homalozoa)
Cellana: (Mollusca: Gastropoda: Patellogastropoda), see Eogastropoda, Patellogastropoda.
Cenoceras: (Mollusca: Cyrtosoma: Nautiloidea), see Nautilida.
Centroonoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Cepaea: (Mollusca: Pulmonata), see Stylommatophora.
Cephalocarida: (Crustacea) see Crustacea.
Cephalochordata: see also Deuterostomia.
Cephalopoda: Mollusca: Cyrtosoma). See also Helcionelloida Dendrogram, Hox Genes, Rostroconchia.
Chaetognatha: See Bilateria.
Chaetopterus: (Annelida, Polychaeta) See Bilateria, Hox Genes.
Chancelloria: X (Porifera: Chancelloriidae), see Porifera*.
Chancelloriidae: X (Porifera?), see Archaeocyatha, Porifera, Porifera Dendrogram.
Chaetoderma: (Mollusca: Aplacophora) see Caudofoveata.
Chama: (Mollusca), see Bivalvia.
Cheilostomata: Lophotrochozoa: Bryozoa)
Chelicerata: Arthropoda), see also Eurypterida.
Chihlioceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Chione: (Mollusca: Bivalvia), see Bivalvia Shell.
Chippewaella: X (Mollusca: Gastropoda: Tergomya), see Tropidodiscidae.
Choanoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda)
Choanoflagellata: see Bilateria, Demospongiae.
Cincta: X Deuterostomia: Homalozoa).
Clathryodictya: X (Porifera; Stromatoporoidea), see Stromatoporoidea.
Clinoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Cliospira: X (Mollusca: Gastropoda: Paragastropoda), see Cliospirinae.
Cliospiridae: X (Mollusca: Gastropoda: Paragastropoda). See also, Macluritoidea.
Cliospirinae: X (Mollusca: Gastropoda: Paragastropoda).
Cloudia: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Cloudina: X (Metazoa i.s.) see Irregulares.
Cnidaria: (Metazoa: Radiata). See also Protostomia, Hox Genes.
Coleicarpus: X (Deuterostomia: Homalozoa).
Coleoidea: (Mollusca: Cyrtosoma)
Conchifera: Mollusca)
Conocardia: X (Mollusca: Rostroconchia) see, Rostroconchia.
Conocardioida: X (Mollusca: Rostroconchia). See also, Rostroconchia.
Conocardia: X (Mollusca: Rostroconchia), see Conocardioida.
Conoctisa: X (Mollusca: Gastropoda: Paragastropoda), see Trochoclisinae.
Consinocodium: X (Porifera: Stromatoporoidea), see Stromatoporoidea.*
Coreospira: X (Mollusca: Conchifera), see Coreospiridae.
Coreospiridae: X? (Mollusca: Conchifera).
Cornuta: X (Deuterostomia: Homalozoa), see Stylophora.
Corticium: (Porifera: Homoscleromorpha), see Homoscleromorpha.
Costipelagiella: X (Mollusca: Gastropoda: Paragastropoda), see Pelagiellida.
Cothurnocystis: X (Deuterostoma: Homalozoa) see Stylophora.
Crambe: (Porifera: Demospongiae: Ceractinomorpha: Poecilosclerida), see Homoscleromorpha.
Craniacea: X (Lophotrochozoa: Brachiopoda), see Craniiformea.
Craniida: Lophotrochozoa: Brachiopoda)
Craniidae: X (Lophotrochozoa: Brachiopoda), see Craniiformea.
Craniiformea: Lophotrochozoa: Brachiopoda).
Cranioposida: X (Lophotrochozoa: Brachiopoda)
Crassostrea: (Mollusca), see Bivalvia.
Crinoidea: Echinodermata), see also, Stromatoporoidea.
Crustacea: (Protostomia)
Crustaceomorpha: see Euarthropoda.
Cryptodonta: (Mollusca), see Bivalvia. See also, Bivalvia Gills.
Cryptostomida: Lophotrochozoa: Bryozoa)
Crytolites: X (Mollusca: Helcionelloidea?) see Gastropoda.
Ctenocystis: X Deuterostomia: Homalozoa) see Ctenocystoidea.
Ctenocystoidea: X Deuterostomia: Homalozoa)
Ctenostomata: Lophotrochozoa: Bryozoa)
Cuspidaria: (Mollusca), see Bivalvia.
Cyamocephalus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Cycloidea: X (Deuterostomia incertae sedis), see Homalozoa: Haplozoa
Cyamoidea: X (Deuterostomia incertae sedis), see Homalozoa: Haplozoa
Cyclestheria: (Crustacea: Branchiopoda) See Crustacea*.
Cycloholcus: X (Mollusca: Conchifera), see Coreospiridae.
Cyclomedusa: X (Ediacaran) See Bilateria.
Cyclopectoceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Tarphycerina.
Cyclostomata: Lophotrochozoa: Bryozoa)
Cyclostomiceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Ellesmerocerida.
Cyclostomiceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Cymatopegma: X (Mollusca: Rostroconchia), see Ribeirioida.
Cymbionites: X (Deuterostomia incertae sedis), see Homalozoa: Haplozoa
Cymbulariidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Cyrtendoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Endocerida.
Cyrtendoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Cyrtobactrites: X (Mollusca: Cyrtosoma: Neocephalopoda), see Bactritida.
Cyrtocerinidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Cyrtocertinina: X (Mollusca: Cyrtosoma: Cephalopoda).
Cyrtogomphoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Cyrtolites: X (Mollusca), see Monoplacophora.
Cyrtonella: X (Mollusca: Gastropoda: Tergomya: Bellerophontida), see "Bellerophontiforms".
Cystosporida: Lophotrochozoa: Bryozoa)
Cyrena: (Mollusca: Bivalvia), see Bivalvia Shell.
Cyrtosoma: Mollusca). See also Helcionelloida Dendrogram.
Dakeoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Ellesmerocerida.
Dehornella: X (Porifera: Stromatoporoidea?), see Stromatoporoidea.
Demospongiae: (Porifera). See also, Homoscleromorpha, Stromatoporoidea.
Dendrocystoides: X (Deuterostomia: Homalozoa) see Soluta
Dentaliida: (Mollusca: Scaphopoda) Scaphopoda
Dentalium: (Mollusca: Scaphopoda) Scaphopoda
Deuterostomia: sea stars + movie stars. This is the crown group, not the stem group.
"Dexiothetica": see Deuterostomia.
Diamphidiocystis: X (Deuterostomia: Homalozoa) see Stylophora.
Dianchicystis: X see Vetulocystidae
Dictyonina: X (Brachiopoda: Lingululiformia) see Paterinida.
Dicyemida: (Mesozoa) See Bilateria.
Didazoon: X (Deuterostomia: Vetulicolia) see Vetulicolia.
Diestoceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Dirhachopea: X (Mollusca: Gastropoda: Orthogastropoda: Sinuopeidae). See Sinuopeidae.
Discinida: Lophotrochozoa: Brachiopoda: Linguliformea)
Discinoidea: (Lophotrochozoa: Brachiopoda: Linguliformea), see Discinida.
Discoceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Tarphycerida.
Discosorida: X (Mollusca: Cyrtosoma: Cephalopoda).
Discosoridae: X (Mollusca: Cyrtosoma: Cephalopoda)
Dokidocyathina: X (Porifera: Archaeocyatha) see Archaeocyatha.
Dokidocyathus: X (Porifera: Archaeocyathida), see Irregulares.
Dolichopterus: X (Arthropoda: Chelicerata: Eurypterida), see Eurypterida.
Drosophila: (Arthropoda, Insecta) See Bilateria, Hox Genes.
Eburoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Ellesmerocerida.
Ecdysozoa: bugs > slugs, the arthropod half of Protostomia. See also, Bilateria.
Echinodermata: We use the crown group crinoids + sea urchins. See also
Ambulacraria, Deuterostomia, Hox Genes.
Echinoidea: (Echinodermata). See Hox Genes.
Eifellia: X (Porifera). See Demospongiae, Hexactinellida, Porifera*, Porifera Dendrogram.
Elleriidae: X (Arthropoda: Chelicerata: Merostoma).
Ellesmeroceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Ellesmerocerida: X? (Mollusca: Cyrtosoma: Cephalopoda).
Endoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Endocerida: X (Mollusca: Cyrtosoma: Cephalopoda)
Endoplectoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Discosorida
Eoarthrolpeura: X (Arthropoda: Myriapoda).
Eogastropoda: (Mollusca: Gastropoda)
Eolimulidae: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Eopteria: X (Mollusca: Rostroconchia), see Conocardioida.
Eothinoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Ephydatia: (Porifera: Demospongiae). See Demospongiae.
Erismacoscinina: X (Porifera: Archaeocyatha) see Archaeocyatha.
Ethmophyllum: X (Porifera: Archaeocyatha), see Archaeocyatha.*
Euarthropoda: (Chelicerata + Crustacea + Myriapoda + Hexapoda)
Euchasma: X (Mollusca: Rostroconchia), see Ribeirioida, Conocardioida !?).
Euconia: X (Mollusca: Gastropoda: Orthogastropoda: Sinuopeidae). See Sinuopeidae.
"Euconiidae": X (Mollusca: Gastropoda: ?Orthogastropoda: Sinuopeidae).
Euomphalida: X (Mollusca: Gastropoda: Eogastropoda).
Euomphalus: (Mollusca: Gastropoda: Eogastropoda), see Eogastropoda.
Euphausia: (Crustacea: Malacostraca) see Crustacea
Euphemetidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Euphoberia: X (Arthropoda: Myriapoda). See Myriapoda.
Euproopidae: X (Arthropoda: Chelicerata: Merostoma)
Euproops: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Euprymna: (Mollusca: Cephalopoda). See Hox Genes*.
Eurypterida: X (Arthropoda: Chelicerata)
Eurypterus: X (Arthropoda: Chelicerata: Eurypterida), see Eurypterida.
Exogyra: (Mollusca: Bivalvia), see Bivalvia Shell.
Fenestrida: Lophotrochozoa: Bryozoa)
Ferrogyra: X (Mollusca: Gastropoda: Paragastropoda), see Cliospirinae.
Flabellicarpus: X (Deuterostomia: Homalozoa) see Stylophora.
Flagellophora: (Nemertodermatida) See Bilateria.
Fordilla: X (Mollusca), see Bivalvia.
Gadilida: (Mollusca: Scaphopoda) Scaphopoda
Gastraea: X hypothetical organism, probably equivalent to Urbilateria. See Bilateria.
Gastropoda: (crown group) (Mollusca).
Gastropoda: stem group) (Mollusca). See also, Tropidodiscidae.
Geisonoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Orthocerida.
Geisonoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Gervillia: (Mollusca: Bivalvia), see Bivalvia Shell.
"Gigantoceras": X (Mollusca: Cyrtosoma: Cephalopoda), see Barrandeocerina.
Glomeropsis: X (Arthropoda: Myriapoda). See Myriapoda.
Glossoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Glycomeris: (Mollusca: Bivalvia), see Bivalvia Shell.
Gnathostomulida: See Bilateria.
Gonioceras: X (Mollusca: Gastropoda: Paragastropoda), see Actinocerida
Gonioceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Goniophora: (Mollusca: Bivalvia), see Bivalvia Shell.
Graciloceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Grandostomatinae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida). See Bellerophontida.
Gymnolaemata: Lophotrochozoa: Bryozoa)
Gyrocystis: X (Deuterostomia: Homalozoa).
Haikouella: X (Chordata) see also
Vetulicolia.
Halkieria: see Monoplacophora, Solenogastres
Haliclona: (Porifera: Demospongiae), see Demospongiae*
Haliotis: (Mollusca: Gastropoda) see Hox Genes.
Halisarca: (Porifera: Demospongiae), see Demospongiae*
Halisarcida: (Porifera: Demospongiae), see Demospongiae.
Haplogonaria: (Acoela) See Bilateria.
Haplosclerida: (Porifera: Demospongiae) See Demospongiae, Homoscleromorpha,
Haplozoa: X (Deuterostomia, incertae sedis)
Hebetoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda)
Hederellida: Lophotrochozoa: Bryozoa)
Helcionella: X (Mollusca: Conchifera), see Helcionellidae. See also, Helcionelloida, Helcionelloida Dendrogram.
Helcionellidae: X? (Mollusca: Conchifera).
Helcionelloida: X? (paraphyletic) (Mollusca). See also Rostroconchia, "Bellerophontiforms".
Helicotis: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Helix: (Mollusca: Pulmonata), see Stylommatophora.
Hemichordata: (Deuterostomata) See Bilateria.
Hemiphragmoceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Henneguya: (Myxozoa) See Bilateria.
Helicoplacoidea: X
Hemichordata: see Deuterostomia.
Helminthochiton: X (Mollusca), see Polyplacophora.
Heracloceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Barrandeocerina.
Heraultipegma: X (Mollusca: Rostroconchia), see Ribeirioida.
Heteractinida: X (Porifera, rejected paraphyletic grade). See Porifera.
Heterodonta: (Mollusca), see Bivalvia.
Heterolimulidae: X? (Arthropoda: Chelicerata: Merostoma).
Hexactinellida: (Porifera). See also Demospongiae.
Hexapoda: see also Crustacea.
Hexasterophora: (Porifera: Hexactinellida), see Hexactinellida.
Hiatella: (Mollusca), see Bivalvia.
Hippocardia: X (Mollusca: Rostroconchia), see Conocardioida.
Hippurotoida: X (Mollusca), see Bivalvia. "Rudists")
Homalozoa:
Homoiostelia: alternate name for Soluta.
Homoscleromorpha: (Porifera), see Demospongiae, Porifera, Porifera Dendrogram.
Homosclerophorida: (Porifera) = Homoscleromorpha, q.v.
Huaiheceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Huroniidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Hydnoceras: X (Porifera: Hexactinellida), see Hexactinellida*.
Hydroides: (Annelida, Polychaeta) See Bilateria.
Hyperstrophema: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Hypseloconida: X (Mollusca), see Monoplacophora.
Hypseloconus: X (Mollusca: ?Gastropoda), see Tergomya.
Illex: (Mollusca: Cyrtosoma: Decapodiformes), see Cephalopod Brain.
Insecta: see also Crustacea.
Invertospira: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Irregulares: X (Porifera: Archaeocyatha), see also Archaeocyatha.*
Ischyrinia: X (Mollusca: Rostroconchia), see Ribeirioida.
Isodiametra: (Acoela). See Hox Genes*.
Isodictya: (Porifera: Demospongiae), see Porifera*.
Jaekelocarpus: X (Deuterostomia: Homalozoa). A mitrate with ?gills
Jolietoceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Barrandeocerina.
Jovellaniidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Kakoeca: (Choanoflagellata), see, Demospongiae.*
Karoceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Kasibelinuridae: X? (Arthropoda: Chelicerata: Merostoma)
Kasibelinurus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Kazachstanicyathida: X (Porifera: Archaeocyatha) see Archaeocyatha, Irregulares.
Kimberella: X (Ediacaran). See Bilateria.
Kimopegma: X (Mollusca: Rostroconchia), see Ribeirioida.
Kionoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Orthocerida.
Kiringella: X (Mollusca), see Monoplacophora. See also, Helcionelloida Dendrogram.
Knightites: X (Mollusca: Gastropoda: Tergomya: Bellerophontida), see "Bellerophontiforms".
Knightitidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Kobayashiella: X (Mollusca: Gastropoda: Paragastropoda), see Mimospirida.
Labechiida: X (Porifera: Stromatoporoidea), see Stromatoporoidea.
Laeogyra: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Lamellipedia: see Euarthropoda.
Lamellorthoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Latouchella: (Mollusca: Conchifera), see Helcionellidae. See also Helcionelloida, Helcionelloida Dendrogram.
Lechitrochoceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Legrandella: (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Leiopteria: (Mollusca: Bivalvia), see Bivalvia Shell.
Lemoneites: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Lepetidae: (Mollusca: Gastropoda: Patellogastropoda).
Lepetopsina: (Mollusca: Gastropoda: Patellogastropoda).
Lepetopsis: (Mollusca: Gastropoda: Patellogastropoda), see Patellogastropoda.
Leptorhynchoides: (Acanthocephala). See Bilateria.
Leucosolenia: (Porifera: Calcarea). See Demospongiae.
Lima: (Mollusca: Bivalvia), see Bivalvia Shell.
Limulidae: Arthropoda: Chelicerata: Merostoma).
Limulina: Arthropoda: Chelicerata: Merostoma).
Limulinae: Arthropoda: Chelicerata: Merostoma).
Limulini: Arthropoda: Chelicerata: Merostoma).
Limulitella: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Limuloides: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Limuloidinae: X (Arthropoda: Chelicerata: Merostoma)
Limulus: (Arthropoda: Chelicerata: Merostoma) see Xiphosura. See also Eurypterida.
Lindstroemoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Lineus: (Nemertini) See Hox Genes.
Lingula: (Lophotrochozoa: Brachiopoda) see Brachiopoda, Hox Genes.
Lingulella: X ((Lophotrochozoa: Brachiopoda: Linguliformea) see Lingulida.
Lingulida: Lophotrochozoa: Brachiopoda: Linguliformea), see also Stromatoporoidea.
Liomesaspis: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura, Euproopidae.
Lituitidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Lituites: X (Mollusca: Cyrtosoma: Nautiloidea), see Barrandeocerina.
Lobobactrites: X (Mollusca: Cyrtosoma: Neocephalopoda), see Bactritida.
Loligo: (Mollusca: Cyrtosoma: Decapodiformes), see Cephalopod Brain.
Lorieroceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Oncocerida.
Lophotrochozoa: slugs > bugs, the molluscan half of Protostomia. See also, Bilateria, Hox Genes.
Lottia: (Mollusca: Gastropoda: Patellogastropoda), see Patellogastropoda.
Lottidae: (Mollusca: Gastropoda: Patellogastropoda).
Lowoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Lymnaea: (Mollusca: Pulmonata), see Basommatophora.
Lymnaeoidea: (Mollusca: Pulmonata), see Basommatophora.
Lyropecten: (Mollusca: Bivalvia), see Bivalvia Shell.
Maclurites: X (Mollusca: Gastropoda: Eogastropoda or Paragastropoda), see Macluritoidea.
Macluritidae: X (Mollusca: Gastropoda: Paragastropoda?). See also, Mimospirida.
Macluritoidea: X (Mollusca: Gastropoda: Eogastropoda or Paragastropoda). See also, Mimospirida.
Malacostraca: (Crustacea) see Crustacea.
Manchuroceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Mandaloceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Discosoridae.
Mandaloceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Mandibulata: Crustacea + Atelocerata. Redundant with Euarthropoda here. See also Myriapoda.
Matherella: X (Mollusca: Gastropoda: Paragastropoda), see Mimospirida. See also, Paragastropoda.
Matherellina: X (Mollusca: Gastropoda: Paragastropoda), see Mimospirida.
Maxillopoda: (Crustacea) see Crustacea.
Mercenaria: (Mollusca), see Bivalvia.
Merostomata: (Arthropoda: Chelicerata), see Chelicerata.
Mesolimulinae: X (Arthropoda: Chelicerata: Merostoma).
Mesolimulus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Mesozoa: See Bilateria.
Metazoa: toads > toadstools
Metoptomatidae: X (Mollusca: Gastropoda: Patellogastropoda).
Michelinoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Orthocerida.
Michelinoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Micromitra: X (Brachiopoda: Linguliformea) see Paterinida.
Middendorffia: (Mollusca: Solenogastres) see Solenogastres.
Mimospira: X (Mollusca: Gastropoda: Paragastropoda), see Cliospiridae, Atracurinae.
Mimospirida: X (Mollusca: Gastropoda: Paragastropoda).
Mitrata: X (Deuterostomia: Homalozoa) see Stylophora.
Mixopterus: X (Arthropoda: Chelicerata: Eurypterida), see Eurypterida.
Monocyathida: X (Porifera: Archaeocyatha), see Archaeocyatha, Irregulares.
Modiomorphoida: X (Mollusca), see Bivalvia.
Monoplacophora: Mollusca).
Monopleura: (Mollusca: Bivalvia), see Bivalvia Shell.
Monorhaphis: (Porifera: Hexactinellida) see Hexactinellida.
Montenegrina: (Mollusca: Pulmonata: Stylommatophora), see Pulmonata.
Montyoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Moravuridae: X (Arthropoda: Chelicerata: Merostoma).
Mulceodens: X (Mollusca: Rostroconchia), see Conocardioida.
Mya: (Mollusca: Bivalvia), see Bivalvia., Bivalvia Shell.
Myocaris: X (Mollusca: Rostroconchia), see Ribeirioida.
Myoida: (Mollusca), see Bivalvia. See also, Bivalvia Dendrogram.
Myriapoda: centipedes & millipedes.
Mytiloida: (Mollusca), see Bivalvia.
Mytilus: (Mollusca), see Bivalvia, Bivalvia Shell.
Nacellina: Mollusca: Gastropoda: Patellogastropoda).
Nacelloidea: (Mollusca: Gastropoda: Patellogastropoda).
Namacalathus: X Metazoa, i.s.), see Irregulares.
Nautilida: Mollusca: Cyrtosoma: Nautiloidea).
Nautiloidea: Mollusca: Cyrtosoma).
Nautilus: (Mollusca: Cyrtosoma: Nautiloidea), see Nautilida.
Nectocaris: X (?) see Vetulicolia.
Nematoda: (Ecdysozoa) See Bilateria, Hox Genes.
Nematomenia: (Mollusca: Solenogastres) see Solenogastres.
Nematostella: (Cnidaria: Anthozoa) See Hox Genes*.
Nemertini: (Protostomia) See Hox Genes*.
Nemertoderma: (Nertodermatida): See Hox Genes.
Nemertodermatida: (Acoelomorpha) See Bilateria.
Neomenia: (Mollusca: Solenogastres) see Solenogastres.
Neopilina: (Mollusca), see Monoplacophora.
Neotrigonia: (Mollusca), see Bivalvia.
Nephriticeratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Nerineidae: X (Mollusca: Gastropoda) see Gastropoda.
Nochoroicyathus: X (Porifera: Archaeocyatha) see Archaeocyatha.*
Nothoceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Nucula: (Mollusca: Bivalvia) see Bivalvia. See also, Ambulacraria.
Nuculana: (Mollusca: Bivalvia), see Bivalvia Shell.
Nuculoidea: (Mollusca), see Bivalvia.
Nyuelia: X (Mollusca: Conchifera), see Helcionellidae.
Octopus: (Mollusca: Cyrtosoma: Vampyropoda), see Cephalopod Brain.
Oepikila: X (Mollusca: Rostroconchia), see Ribeirioida.
Omphalocirridae: X (Mollusca: Gastropoda: Paragastropoda).
Omphalocirrus: X (Mollusca: Gastropoda: Paragastropoda), see Omphalocirridae.
Oncocertidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Oncocerida: X? (Mollusca: Cyrtosoma: Nautiloidea). See also, Nautilida.
Onychochilidae: X (Mollusca: Gastropoda: Paragastropoda)
Onychochilius: X (Mollusca: Gastropoda: Paragastropoda), see Mimospirida. See also, Paragastropoda.
Oopsacas: (Porifera: Hexactinellida), see Hexactinellida.
Ophidioceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Orbiculoidea: (Lophotrochozoa: Brachiopoda: Linguliformea) See, Discinida.
Ormoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Orthida: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Orthoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Orthocerida: X (Mollusca: Cyrtosoma: Neocephalopoda).
Orthogastropoda: Mollusca: Gastropoda)
Oscarella: (Porifera: Homoscleromorpha), see Homoscleromorpha*, Porifera*, Porifera Dendrogram.
Orthomyelina: (Mollusca: Bivalvia), see Bivalvia Shell.
Orthonectida: (Mesozoa) See Bilateria.
Ostracoda: (Crustacea) see Crustacea.
Palaeoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Plectronocerida.
Palaeoheterodonta: (Mollusca), see Bivalvia. See also, Bivalvia Dendrogram.
Palaeotoxodonta: (Mollusca), see Bivalvia. See also, Bivalvia Gills.
Paleolimulidae: X (Arthropoda: Chelicerata: Merostoma).
Paleolimulus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Paleomerus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Pancrustacea: see also Crustacea.
Paragastropoda: X (Mollusca: Gastropoda).
Paraphragmitidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Parastylonurus: X (Arthropoda: Chelicerata: Eurypterida), see Eurypterida.
Pasternakevia: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Patella: (Mollusca: Gastropoda: Patellogastropoda), see Patellogastropoda, Bilateria, Hox Genes.
Patellina: (Mollusca: Gastropoda: Patellogastropoda).
Patellogastropoda: (Mollusca: Gastropoda).
Paterinida: X (Lophotrochozoa: Brachiopoda: Linguliformea).
Pauropegma: X (Mollusca: Rostroconchia), see Ribeirioida.
Pecten: (Mollusca), see Bivalvia.
Paleophragmodictya: X (Porifera: ?Hexactinellida) see Hexactinellida*.
Pelagiella: X (Mollusca: Gastropoda: Paragastropoda), see Pelagiellida.
Pelagiellida: X (Mollusca: Gastropoda: Paragastropoda).
Pelagiellidae: X (Mollusca: Gastropoda: Paragastropoda), see Pelagiellida.
Pentamerida: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Peridionites: X (Deuterostomia incertae sedis), see Homalozoa: Haplozoa
Pervertina: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Petrocrania: X (Lophotrochozoa: Brachiopoda), see Craniiformea.
Philhedra: X (Lophotrochozoa: Brachiopoda), see Craniiformea.
Pholadomyoida: (Mollusca), see Bivalvia. See also, Bivalvia Gills.
Pholas: (Mollusca), see Bivalvia.
Phragmoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Discosorida.
Phragmoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Phylactolaemata: Lophotrochozoa: Bryozoa)
Piloceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Endocerida.
Piloceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Pinctada: (Mollusca), see Bivalvia.
Pinnocaris: X (Mollusca: Rostroconchia), see Ribeirioida.
Pinnotheres: (Crustacea: Malacostraca). See Crustacea*.
Pipiscius: X (Chordata?) see Vetulicolia.
Plakina: (Porifera: Homoscleromorpha). See Demospongiae, Homoscleromorpha*.
Plakinidae: (Porifera) = Homoscleromorpha.
Plakortis: (Porifera: Homoscleromorpha). See Homoscleromorpha*.
Planorbis: (Mollusca: Pulmonata), see Pulmonata, Basommatophora.
Platyhelminthes: (Ecdysozoa). See Bilateria.
Plectoceratidae: (Mollusca: Cyrtosoma: Cephalopoda).
Plectronoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Plectronocerida.
Plectronoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Plectronocerida: X (Mollusca: Cyrtosoma: Cephalopoda)
Pleurojulus: X (Arthropoda: Myriapoda). See Myriapoda.
Plicatula (Mollusca: Bivalvia), see Bivalvia Shell.
Pojetaia: X (Mollusca), see Bivalvia.
Polychaeta: (Annelida) See Bilateria.
Polydesmiidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Polyplacophora: Mollusca)
Polypodium: (Cnidaria, i.s.) See Bilateria.
Pomatrum: X (Deuterostomia: Vetulicolia) see Vetulicolia.
Porifera: the sponges. Probably a paraphyletic grade. See also Hox Genes.
Poromyacea: (Mollusca), see Bivalvia Gills.
Poterioceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Praecardioida: X (Mollusca), see Bivalvia.
Problognathia: (Gnathostomulida) See Bilateria.
Productida: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Proeccyliopterus: X (Mollusca: Gastropoda: Paragastropoda), see Pelagiellida.
Proschizoramia: X. See Euarthropoda.
Protactinoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Plectronocerida.
Protactinoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Protactinocerida: X (Mollusca: Cyrtosoma: Cephalopoda)
Proteoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Proterocameroceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Protocycloceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Ellesmerocerida.
Protocycloceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Proterospongia: (Choanoflagellata), see Porifera*
Protolimulus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Protopharetra: X (Porifera: Archaeocyatha), see Irregulares*.
Protoscaevogyra: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Protospongia: X (Porifera: Hexactinellida), see Hexactinellida*.
Protostomia: slugs + bugs. This is the crown group, not the stem group. See also Bilateria.
Psammonlimulus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Pseudoconocardium: X (Mollusca: Rostroconchia), see Conocardioida.
Pseudocorticum: (Porifera: Homoscleromorpha), see Homoscleromorpha.
Pseudoniscidae: X? (Arthropoda: Chelicerata: Merostoma)
Pseudoniscus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Pseudorthoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Pseudorthoceratidae.
Pseudorthoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Pseudorthocerida: X (Mollusca: Cyrtosoma: Cephalopoda)
Pseudotechnophorus: X (Mollusca: Rostroconchia), see Conocardioida.
Ptenoceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Nautilida.
Pterioida: (Mollusca), see Bivalvia.
Pteriomorpha: (Mollusca), see Bivalvia. See also, Bivalvia Gills.
Pterothecinae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida). See Bellerophontida.
Pterygotus: X (Arthropoda: Chelicerata: Eurypterida), see Eurypterida.
Ptilosarcus: (Metazoa: Cnidaria) see Cnidaria.
Ptychopegma: X (Mollusca: Rostroconchia), see Ribeirioida.
Pulmonata: (Mollusca).
Pycnogonida: (Arthropoda: Chelicerata), see Chelicerata.
Radiata: no precise definition at the moment. Generally, the jellyfish, corals, comb-jellies, and related forms.
Rasetticyathus: X (Porifera: Archaeocyatha) see Irregulares*.
Receptaculitidae: X (Metazoa i.s.) see Archaeocyatha.
Regulares: X (Porifera: Archaeocyatha, rejected clade), see Archaeocyatha.*
Rehbachiella: X (Crustacea: Branchiopoda). See Crustacea*.
Remipedia: (Crustacea) see Crustacea.
Reticulosa: X (Porifera: ?Hexactinellida), see Hexactinellida.
Rhabdopleura: (Hemichordata: Pterobranchia?) see Deuterostomia.
Rhenocystis: X (Deuterostomia: Homalozoa) see Stylophora.
Rhipidiorhynchus: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Rhombozoa: (Mesozoa) See Bilateria.
Rhynchonellata: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Ribeiria: X (Mollusca: Rostroconchia), see Ribeirioida. See also, Rostroconchia.
Ribeirioida: X Mollusca: Rostroconchia). See also, Rostroconchia.
Rolfeia: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Rolfeiidae: X? (Arthropoda: Chelicerata: Merostoma).
Rostroconchia: X (Mollusca)
Ruedemannoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Rugosa: X (Cnidaria), see also Stromatoporoidea.
Salpingostomatinae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida). See Bellerophontida.
Sandineria: X (Arthropoda: Myriapoda). See Myriapoda.
Scaevogyra: X (Mollusca: Gastropoda: Paragastropoda), see Mimospirida.
Scaphopoda: Mollusca: Cyrtosoma). See also, Helcionelloida Dendrogram, Rostroconchia.
Scenella: X (Mollusca: Conchifera), see Scenellidae. See also, Helcionelloida Dendrogram.
Scenellidae: X (Mollusca: Conchifera).
Schizopea: X (Mollusca: Gastropoda: Orthogastropoda: Sinuopeidae).
Schizoramia: see Euarthropoda.
Schuchertoceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Scurriopsis: (Mollusca: Gastropoda: Patellogastropoda), see Patellogastropoda.
Sellithyris: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Sempteochitonida: X (Mollusca: Polyplacophora), see Polyplacophora.
Sepia: (Mollusca: Cyrtosoma: Decapodiformes), see Cephalopod Brain.
Silicispongia: (Porifera, rejected clade), see Porifera Dendrogram.
Shamattawaceras: X (Mollusca: Cyrtosoma: Neocephalopoda), see Ascocerida.
Sinistracirsa: X (Mollusca: Gastropoda: Paragastropoda), see Mimospirida.
Sinuella: X (Mollusca: Conchifera), see Coreospiridae.
Sinuites: X (Mollusca: Gastropoda: Tergomya). See Bellerophontida, "Bellerophontiforms".
Sinuitidae: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Sinuitina: (Mollusca: Gastropoda: Tergomya) (parphyletic).
Sinuitopsis: X (Mollusca: Gastropoda: Tergomya), see "Bellerophontiforms".
Sinuopeidae: (Mollusca: Gastropoda: ?Orthogastropoda).
Siphonariida: (Mollusca: Pulmonata), see Basommatophora.
Siphonodentalioida: (Mollusca: Scaphopoda) Scaphopoda
Skeemella: X (Deuterostomia?) see Vetulicolia.
Solactiniella: X (Porifera: Hexactinellida), see Porifera*.
Solemyoidea: (Mollusca), see Bivalvia.
Solenogastres: Mollusca)
Soluta: X (Deuterostomia: Homalozoa)
Spadella: (Chaetognatha): See Hox Genes.
Spiriferida: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Stapicyathus: X (Porifera: Archaeocyatha) see Archaeocyatha.*
Stenolaemata: Lophotrochozoa: Bryozoa)
Stenothecidae: X? (Mollusca: Conchifera).
Stenothecoida: X? (Mollusca), see Stenothecidae.
Stenothecoides: X (Mollusca: Conchifera) , see Stenothecidae.
Stereoplasmoceratidae: X (Mollusca: Cyrtosoma: Neocephalopoda).
Stichopus: (Echinodermata: Holothuroidea) see Ambulacraria.
Streblochondria: (Mollusca: Bivalvia), see Bivalvia Shell.
Strepsodiscus: X (Mollusca: Gastropoda: Tergomya), see Tropidodiscidae.
Stromatocerium: X (Porifera: Stromatoporoidea), see Stromatoporoidea.*
Stromatocystites: X (Deuterostomia: Homalozoa) see Ctenocystoidea.
Stromatoporoidea: X? Porifera). See also, Archaeocyatha, Irregulares.
Strongylocentrotus: (Echinodermata: Echinoidea) see Hox Genes.
Strophomenata: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Stylommatophora: (Mollusca: Pulmonata).
Stylophora: X see also, Vetulocystidae.
Suberites: (Porifera: Demospongiae), see Demospongiae.
Suecoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Endocerida.
Symsagittifera: (Acoela) see Hox Genes.
Synziphosurida: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Syringocnemidina: X (Porifera: Archaeocyatha) see Archaeocyatha.
Syringocrinus: X (Deuterostomia: Homalozoa) see Soluta.
Systellommatophora: (Mollusca: Pulmonata).
Tabulata: X (Cnidaria: Hexacorallia), see also Stromatoporoidea.
Tachypleini: Arthropoda: Chelicerata: Merostoma).
Tachypleus: (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Tapinogyra: X (Mollusca: Gastropoda: Paragastropoda), see Atracurinae.
Tarphyceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Tarphycerida: X (Mollusca: Cyrtosoma: Nautiloidea)
Tarphycerina: X (Mollusca: Cyrtosoma: Nautiloidea)
Technophorus: X (Mollusca: Rostroconchia), see Ribeirioida.
Tellina: (Mollusca), see Bivalvia.
Terebratulida: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Tergomya: X (Mollusca: Gastropoda). See also, Helcionelloida, Helcionelloida Dendrogram, Monoplacophora.
Testacella: (Mollusca: Pulmonata: Stylommatophora), see Pulmonata.
Tetracapsula: (Myxozoa) See Bilateria.
Tetraconata: see Crustacea.
Tetractinomorpha: Demospongiae).
Tetranota: X (Mollusca: Gastropoda: Tergomya: Bellerophontida).
Thalamocyatha: X (Porifera: Archaeocyatha), see Archaeocyatha.*
Thecideida: (Lophotrochozoa: Brachiopoda) see Brachiopoda.
Thescaloceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Plectronocerida.
Titusvillea: X (Porifera: Hexactineelida), see Hexactinellida*.
Todarodes: (Mollusca: Cyrtosoma: Decapodiformes), see Cephalopod Brain.
Tolmachovia: X (Mollusca: Rostroconchia), see Ribeirioida.
Tonicella: (Mollusca), see Polyplacophora.
Tragoceras: X (Mollusca: Cyrtosoma: Nautiloidea), see Tarphycerina.
Tremadictyon: X (Porifera: Hexactinellida), See Hexactinellida*.
Tremanotus: X (Mollusca: Gastropoda: Tergomya: Bellerophontida), see "Bellerophontiforms".
Trematis: X (Lophotrochozoa: Brachiopoda: Linguliformea), see Discinida.
Trigonia: (Mollusca: Bivalvia), see Bivalvia Shell.
Trigonioida: (Mollusca), see Bivalvia.
Trilobita: X Arthropoda), see also Stromatoporoidea.
Trimerellida: X (Lophotrochozoa: Brachiopoda).
Trimeroceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Tripleuroceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Trepostomatida: Lophotrochozoa: Bryozoa).
Tripteroceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Trochoclisa: X (Mollusca: Gastropoda: Paragastropoda), see Trochoclisinae.
Trochoclisinae: X (Mollusca: Gastropoda: Paragastropoda).
Trochocystites: X (Deuterostomia: Homalozoa) see Cincta.
Trocholitidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Tropidodiscidae: X? Mollusca: Gastropoda). See also, Monoplacophora.
Tropidodiscus: X (Mollusca: Gastropoda: Tergomya), see Tropidodiscidae.
Tryblidiida: (Mollusca) = Monoplacophora. , see Polyplacophora. See also, Helcionellidae, Helcionelloida.
Tryblidium: X (Mollusca), see Monoplacophora. See also, Polyplacophora.
Undospira: X (Mollusca: Gastropoda: Paragastropoda), see Atracurinae.
Unionoida: (Mollusca), see Bivalvia.
Unionoidea: (Mollusca), see Bivalvia.
Uranoceratidae: (Mollusca: Cyrtosoma: Cephalopoda).
Urbilateria: see Bilateria, Protostomia
Urochordata: see also Deuterostomia.
Valoisella: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Valcouroceratidae: X (Mollusca: Cyrtosoma: Nautiloidea).
Valloisellidae: X? (Arthropoda: Chelicerata: Merostoma).
Veneroida: (Mollusca), see Bivalvia. See also, Bivalvia Dendrogram.
Venus: (Mollusca: Bivalvia), see Bivalvia Shell.
Vernanimalcula: X (Metazoa i.s.) see Hox Genes.
Versispira: X (Mollusca: Gastropoda: Paragastropoda), see Onychochilidae.
Vetulicola: X (Deuterostomia: Vetulicolia) see Vetulicolia.
Vetulicolia: X the mostbasal deuterostomes currently known. See also, Deuterostomia, Hox Genes.
Vetulocystidae: X see also, Deuterostomia, Hox Genes.
Vetulocystis: X see Vetulocystidae
Volsella: (Mollusca: Bivalvia), see Bivalvia Shell.
Wanwanella: X (Mollusca: Rostroconchia), see Ribeirioida.
Warthia: X (Mollusca: Gastropoda: Tergomya). See Bellerophontida.
Weinbergina: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Weinberginidae: X (Arthropoda: Chelicerata: Merostoma)
Westonoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Willwerathia: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Wiwaxia: see also Monoplacophora, Solenogastres
Wutinoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Xaniopyramus: X (Arthropoda: Chelicerata: Merostoma) see Xiphosura.
Xenoturbella: Deuterostomia: Ambulacraria) see also Deuterostomia, Bilateria.
Xiashanoceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Ellesmerocerida.
Xiashanoceratidae: X (Mollusca: Cyrtosoma: Cephalopoda).
Xidazoon: X see Vetulicolia.
Xiphosura: Arthropoda: Chelicerata: Merostoma), see also Eurypterida.
Xiphosurida: Arthropoda: Chelicerata: Merostoma).
Yangtzespiriidae: X (Mollusca: Gastropoda: Paragastropoda).
Yanheceras: X (Mollusca: Cyrtosoma: Cephalopoda), see Plectronocerida.
Yanheceratidae: X (Mollusca: Cyrtosoma: Cephalopoda)
Yanhecerida: X (Mollusca: Cyrtosoma: Cephalopoda)
Yochelcionella: X (Mollusca: Conchifera), see Helcionelloida.
Yochelcionellidae: X? (Mollusca: Conchifera). See also, Helcionelloida Dendrogram, "Bellerophontiforms".
Yoldia: (Mollusca), see Bivalvia.
Yunnanozoa: X see Vetulicolia.
Yunnanozoon: X (Deuterostomia: Vetulicolia) see Vetulicolia. See also Hox Genes*.
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