plural noun
Pa·​rap·​si·​da | \ pəˈrapsədə\

Definition of Parapsida

in some classifications
: a subclass of reptiles in which the skull has two dorsal temporal openings adjoining the parietals and which includes the ichthyosaurs and related extinct forms and sometimes the lizards and snakes — compare diapsida

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History and Etymology for Parapsida

New Latin, from para- entry 1 + -apsida (from Greek hapsid-, hapsis arch, loop)

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