plural noun
Palae·og·na·thae | \ˌpālēˈägnəˌthē, ˌpal-\

Definition of Palaeognathae 

in some especially former classifications

: a superorder of the subclass Neornithes comprising birds with a primitive reptilian type of palate that are now usually included in Neognathae

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Other Words from Palaeognathae

palaeognathic \¦⸗⸗əg¦nathik \ or palaeognathous \¦⸗⸗¦ägnəthəs \ adjective

History and Etymology for Palaeognathae

New Latin, from pale- + -gnathae

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