Testudinata

Testudinata
Temporal range: Late TriassicHolocene, Possible Early and Middle Triassic records in the form of fossil tracks
Skeleton of Proganochelys quenstedti, American Museum of Natural History
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Pantestudines
Clade: Testudinata
Klein, 1760
Subgroups

Testudinata is the group of all tetrapods with a true turtle shell. It includes both modern turtles (Testudines) and many of their extinct, shelled relatives (stem-turtles), though excluding Odontochelys and Eorhynchochelys, which are placed in the more inclusive Pantestudines.