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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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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