REPTILE SUBGROUPS


The Class Reptilia can be divided into a number of subgroups. The listing below is one possible version.

SUBCLASS SYNAPSIDA

Order Pelycosauria

Order Therapsida

Suborder Biarmosuchia

Suborder Dinocephalia

Suborder Gorgonopsia

Suborder Cynodontia

SUBCLASS ANAPSIDA

Order Testudines

Suborder Pleurodira

Suborder Cryptodira

SUBCLASS DIAPSIDA

Infraclass Lepidosauromorpha

Division Euryapsida

Superorder Pachypleurosauria

Superorder Sauroterygia

Order Placodontia

Order Nothosauria

Order Plesiosauria

Division Ichthyosauria

Superorder Lepidosauria

Order Sphenodontia

Order Squamata

Suborder Lacertilia

Suborder Serpentes

Infraclass Archosauromorpha

Division Archosauria

Subdivision Crurotarsi

Superorder Crocodylomorpha

Order Crocodylia

Subdivision Ornithodira

Order Pterosauria

Suborder Rhamphorynchoidea

Suborder Pterodactyloidea

Superorder Dinosauria

Order Saurischia

Suborder Theropoda

Suborder Sauropodomorpha

Order Ornithischia

Suborder Thyreophora

Suborder Cerapoda


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