arthrodire

American

[ahr-thruh-dahy^uhr] / ˈɑr θrəˌdaɪər /

noun

any of numerous fishes of the extinct order Arthrodira, widely distributed during the Devonian Period, having the anterior part of the body covered by a shield of bony plates.

< New Latin Arthrodira, equivalent to arthro- arthro- + -dira < Greek deirḗ neck, throat

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arthrodire

However, more complete arthrodire fossils reveal that these fish had squatter, cylindrical bodies.

From New York Times ● Mar. 4, 2023

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023