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Definition of Anapsida
1. Noun. Oldest known reptiles; turtles and extinct Permian forms.
Exact synonyms: Subclass Anapsida
Group relationships: Class Reptilia, Reptilia
Member holonyms: Anapsid, Anapsid Reptile, Chelonia, Order Chelonia, Order Testudinata, Order Testudines, Testudinata, Testudines
Generic synonyms: Class
Group relationships: Class Reptilia, Reptilia
Member holonyms: Anapsid, Anapsid Reptile, Chelonia, Order Chelonia, Order Testudinata, Order Testudines, Testudinata, Testudines
Generic synonyms: Class