page_title: Captorhinida
hierarchical_section_title: Captorhinida
caption_attribution_description: English: Fossil of Labidosaurus hamatus, an extinct reptile
context_page_description: Captorhinida is a doubly paraphyletic grouping of early reptiles. Robert L. Carroll ranked it as an order in the subclass Anapsida, composed of the following suborders:
  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 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.
context_section_description: 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:
  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.
caption: Fossil of Labidosaurus hamatus
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