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Rhynchocephalia

plural noun Rhyn·cho·ce·pha·lia \ ˌriŋ(ˌ)kōsə̇ˈfālyə , -ālēə \

Definition of Rhynchocephalia

: an order of Reptilia that comprises forms resembling lizards but having biconcave vertebrae, immovable quadrate bones, and other peculiar osteological characters and that includes Sphenodon and numerous fossil genera — compare tuatara
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rhynchocephalian

\-lēən\ adjective or noun
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rhynchocephalic

\-¦falik\ adjective
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rhynchocephalous

adjective

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Origin and Etymology of rhynchocephalia

New Latin, from rhynch- + cephal- + -ia

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