Palaeos		Gastropoda
Mollusca		Orthogastropoda

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Orthogastropoda

Abbreviated Dendrogram

MOLLUSCA
|--ACULIFERA
`--CONCHIFERA
   `==Helcionelloida
      `--+--Bellerophontoidea
         `--GASTROPODA  (crown group)  
            |==Eogastropoda  (paraphyletic or polyphyletic) 
            |  |?--Macluritoidea
            |  |?--Euomphaloidea
            |  `--Patellogastropoda
            `--Orthogastropoda  
               |--Vetigastropoda
               |--Neritimorpha
               `--+--Caenogastropoda
                  `--Heterobranchia
                     |--Opisthobranchia
                     `--Pulmonata

Contents

Index
Overview
Gastropod radulas
Systematics Gastropoda
Eogastropoda
Macluritoidea
Euomphaloidea
Patellogastropoda
Orthogastropoda
Vetigastropoda
Neritimorpha
Glossary
Dendrogram
References

Taxa on This Page

Macluritidae
Macluritoidea

Introduction

Orthogastropoda:

Range: from the Late Carboniferous (Dolgellian)

Phylogeny: Gastropoda : Eogastropoda + * : Murchisoniida ::: Neritopsida + Vetigastropoda + Cocculiniformia (may be polyphyletic?) + Apogastropoda

Characters: $ Plexo(rhipido) glessate buccal apparatus; pin-hole eyes; $ osphiadia with sensory cells; $ statocysts ventrally situated (all from Haszprunar 1988 p.9],

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page uploaded 6 March 2003
checked ATW050825
original material Creative Commons Attribution M. Alan Kazlev
this material may be freely used
all other material © original authors or sources