Parapsida
plural noun
Pa·rap·si·da
pəˈrapsədə
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
Word History
Etymology
New Latin, from para- entry 1 + -apsida (from Greek hapsid-, hapsis arch, loop)