The numbers at the left refer to the numeration used in the old Palaeos. Some of the previous units have been subdivided, while several have been merged, and some new units for small eccentric taxa added, reflecting the phylogenetic uncertianty regarding the group in question. Note that the old numbering doesn't necessarily follow the current phylogenetic sequence. MAK111021

10: Chordata: tunicates, amphioxus, Haikouella
20: Vertebrata: the ancestors of vertebrates, the first vertebrates, primitive survivors like hagfish and and lampreys (Craniata in the old Palaeos)
30: Conodonta: the conodonts
20: Anaspida: not to be confused with anapsida, these were early jawless vertebrates
40: Pteraspidomorphi: the other vertebrate lineage
50: Thelodonti: theolodonts
50: Cephalaspidomorphi: galeaspids and osteostracans, the "ostracoderms" with their elaborate headshields
60: Gnathostomata: vertebrates with jaws and paired fins (or limbs in the case of land animals)
60: Placodermi*: placoderms, a diverse group of early armoured fish
90: Acanthodii: "spiny sharks", the common ancestors of all recent fish
70: Chondrichthyes: early sharks and living holocephalians
80: Neoselachii: living sharks,skates & rays
90: Osteichthyes: bony fish
90: Actinopterygii: ancestral "ray-finned" fish; Cheirolepis, bichirs, sturgeons
100: Neopterygii: gars, Amia
110: Teleostei*: the first "advanced" fishes
120: Euteleostei*: carp,catfish, salmon, pike, deep benthic fish
130: Acanthomorpha*: tuna, bass, flounder, cod, and cichlids, among many others
140: Sarcopterygii: lobe-finned fish
150: Tetrapoda: the transition to land, the first amphibians
160: Temnospondyli: the temnospondyls, an important group of Paleozoic and early Mesozoic amphibains
170: Lepospondyli*: small Paleozoic amphibians
180: Lissamphibia*: living amphibians
190: Reptiliomorpha: anthracosauroids, embolomeres, seymouriamorphs, amphibians on the way to reptiles
190: Amniota: evolution invents the amniote egg; the first reptiles.
210: Eureptilia: previously known as Captorhinomorphs, these are the earliest and most primitive reptiles
200: Anapsida: bolosaurs, mesosaurs, pareiasaurs, and other exotic early types
200: Chelonii: turtles and their relatives, who may be anapsids or, according to recent theories, lepidosauromorphs or archosaurs (we've got them with the anapsids for now).
210: Diapsida: Early diapsids, previously known as Eosuchians, an important stem group, also various oddball groups who have been placed here because we don't know where else to put them
210: Ichthyosauria: the ichthyosaurs or "fish lizards", a successful group of mesozoic marine reptiles
220: Lepidosauromorpha: the archosaurs' unassuming cousins
220: Sauropterygia: plesiosaurs and related marine reptiles
230: Sphenodontia (Rhynchocephalia): Sphenodon and relatives
240: Squamata: iguanas, agamids and chameleons (previously separate units 250 Scleroglossa (skinks, gekkos,varanids and other derived lizards) and 260 Pythonomorpha (mosasaurs and snakes) are now included here)
270: Choristodera: a specialised lizard and crocodile like group, previously included under the "Eosuchias"
270: Archosauromorpha: rhynchosaurs, trilophosaurs, and other early types
270: Archosauria: poposurs, rauisuchids, phytosaurs, and friends, the "thecodonts"
290: Crocodilia (Crocodylomorpha): crocodiles and their ancestors
300: Pterosauria*: pterodactyls
310: Dinosauromorpha/Dinosauria*: the ancestors of the dinosaurs, and dinosauria overview (for other dinosaurs see the following units)
340: Theropoda: carnivorous dinosaurs, from little Coelophysis to the mighty Carcharodontosaurs
340: Coelurosauria: agile, mostly small, but a few very large, advanced carnivorous and herbivorous dinosaurs with feathers and grasping forelimbs, ground dwellers, tree-climbers, gliders and fliers, intermediate between dinosaurs and the first birds
330: Sauropodomorpha/Sauropoda: sauropods, diplodocii, brachiosauri, and co, the giants among giants
320: Ornithischia: stegosaurs, ankylosaurs, hadrosaurs and Triceratops, a diverse and very specialised group of herbivorous dinosaurs.
350: Aves: early birds (this will probably eventually be divided into a number of separate units)
360: Galloanserae: chickens, ducks (possible parent of charadriomorphs)
365: Charadriomorpha: cranes, vultures, flamingos and shore birds (this and the following two units needs revising in the light of molecular phylogeny and the Neoaves hypothesis)
370 Gruimorpha: grebes, hawks, owls & coockoos
380: Passeriformes*: song birds
390: Synapsida: the pelycosaurs, e.g. Dimetrodon
400: Therapsida: the mamal-like reptiles: Biarmosuchids, Dinocephalians, Dicynodonts, Gorgonopsians & Therocephalians
410: Cynodontia: cynognaths, tritylodonts, tritylodonts and other furry things that weren't mammals but were on the road to them
420: Mammaliformes: Morganucodon, Hadrocodium, and kuehneotheriids, also multituberculates (which are like rodents but much more primitive)
430: Mammalia: Monotremes and Mesozoic mammals
440: Metatheria*: marsupials
450: Eutheria: primitive Mesozoic non-placental mammals, and some early Cenozoic placental mammals
450: Xenarthra: sloths, anteaters, armadillos, and glyptodonts
510: Laurasiatheria: a major mammal group revealed through molecular phylogeny
500: Ferae*: cats, bears, dogs, seals
510: Meridiungulata: the South American ungulates, who may or may not constitute a natural group
530: Perissodactyla*: horses, tapirs, rhinos, titanotheres and chalicotheres; the "odd-toes" ungulates
520: Cetartiodactyla: camels, pigs, deer, and other "even-toed" ungulates. And whales, who just happen to be related.
470: Anagalida*: unit retained pending revision; includes a group of obscure extinct forms of uncertain relationships which may or may not belong here, along with rabbits and their ancestors
475: Rodentia*: rodents, the most speciose and succesful group of mammals
480: Archonta: cousins of the primates: tree shrews, plesiadapiformes, colugos, etc
480: Primates: lemurs, tarsiers, monkeys, apes and hominids (or hominans, depending on your preferred terminology)
490: Chiroptera*: bats, previously included with the archonta but in the light of molecular phylogeny now considered a separate group
460: Insectivora: shrews, hedgehogs, etc.
530: Afrotheria*: a diverse group that originated in Africa, includes some taxa previously cobnsidered insectivores
530: Proboscidea:*: elephants and their prehistoric relatives the mastodons and mammoths

Part 3: Bones

Bones

   The Braincase (Neurocranium)
      The Ethmoid Region
         Ethmoid
      The Occiput
         for paroccipital process, seeOpisthotic
      The Otic Region
         Dermosphenotic
         Mastoid
         Opisthotic
         Prootic
      The Sphenoid Region
         Basisphenoid
         Pleurosphenoid
         Sphenethmoid

   The Dermal Bones (Dermatocranium)
      Facial Series
         Internasal
         Premaxilla
         Septomaxilla
      Mandibular Series
         Dentary
         Gular
         Infradentaries (see Surangular)
         Surangular
      Opercular Series
         Opercular
      Orbital Series
         Jugals
      Palatal Series
         Palatines

The Ear
Incus

   Gill Arch Derivatives (Splanchnocranium)
      Epibranchials
      Incus (see Ear: Incus)
      Hypohyal
      Meckel's Cartilage

   Teeth
      Canines
      Molars
      Tooth Implantation

Deuterostomia

Tellurobiota

checked ATW060112, last modified MAK120708
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