plural noun
Syn·​ap·​to·​sau·​ria | \sə̇ˌnaptəˈsȯrēə\

Definition of Synaptosauria 

: a subclass of Reptilia comprising Permian and Mesozoic typically aquatic or amphibious reptiles with temporal openings high on the roof of the skull and including the orders Protorosauria and Sauropterygia

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Other Words from Synaptosauria

synaptosaurian \ ⸗¦⸗⸗¦⸗rēən \ adjective

History and Etymology for Synaptosauria

New Latin, from Greek synaptos + New Latin -sauria

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