heterostracan

[ het-uh-ros-truh-kuhn ]

/ ˌhɛt əˈrɒs trə kən /

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noun Paleontology.

any of several ostracoderms of the order Heterostraci, from the Silurian and Devonian Periods, having the anterior part of the body enclosed in bony plates.

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Origin of heterostracan

<New Latin Heterostrac(i) (plural) name of the order, equivalent to heter- heter- + Greek ostrak(ón) (singular) “shell” + -an

Words nearby heterostracan

heterosexuality, heterosis, heterosocial, heterosporous, heterospory, heterostracan, heterostyled, heterostyly, heterotactic, heterotaxis, heterotelic

How to use heterostracan in a sentence

Older than the latter is the heterostracan, Pteraspis, and Cyathaspis.
The Origin of Vertebrates|Walter Holbrook Gaskell
The best known of the Heterostracan families is that of Pteraspidæ.
A Guide to the Study of Fishes, Volume 1 (of 2)|David Starr Jordan