Captorhinida

Extinct order of reptiles
Fossil of Labidosaurus hamatus

Captorhinida (older name: Cotylosauria) is a doubly paraphyletic grouping of early reptiles. Robert L. Carroll (1988) ranked it as an order in the subclass Anapsida, composed of the following suborders:[1]

  • A paraphyletic Captorhinomorpha, containing the families Protorothyrididae, Captorhinidae, Bolosauridae, Acleistorhinidae and possibly also Batropetidae
  • Procolophonia, containing families Nyctiphruretidae, Procolophonidae and Sclerosauridae
  • Pareiasauroidea, with families Rhipaeosauridae and Pareiasauridae
  • Millerosauroidea, with a single family Millerettidae.

While they all share primitive features and resemble the ancestors of all modern reptiles, some of these families are more closely related to (or belong to) the clade Parareptilia, while others are further along the line leading to diapsids. For this reason, the group is only used informally, if at all, by most modern paleontologists. All members of this group are thought to be extinct.

References

  1. ^ R. L. Carroll (1988), Vertebrate Paleontology and Evolution, W. H. Freeman and Company, New York
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Sauropsida (Reptilia sensu lato)
Tetrapodomorpha
    • see Tetrapodomorpha
Reptiliomorpha
    • see Reptiliomorpha
Sauropsida
    • see below↓
Acleistorhinidae
Bolosauridae
Mesosauria
Millerettidae
Procolophonia
    • see Procolophonia
Diapsida
    • see below↓
Mesosaurus tenuidens Milleretta rubidgei
Younginidae
Tangasauridae
Weigeltisauridae
Drepanosauromorpha
Kuehneosauridae
Choristodera
    • see Choristodera
Ichthyosauromorpha
    • see Ichthyosauromorpha
Sauropterygia
    • see Sauropterygia
Thalattosauria
    • see Thalattosauria
Sauria
(Crown-Reptilia)
Lepidosauromorpha
Archelosauria
Archosauromorpha
Pantestudines
Hovasaurus boulei

Weigeltisaurus jaekeli

Megalancosaurus preonensis
See also
Possible sauropsids
Other taxa
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