anapsida

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Noun anapsida has 1 sense

Anapsida, subclass Anapsida - oldest known reptiles: turtles; extinct Permian forms
--₁ is a kind of class
--₁ is a member of Reptilia, class Reptilia
--₁ has members:
anapsid, anapsid reptile; Chelonia, order Chelonia, Testudinata, order Testudinata, Testudines, order Testudines