plural noun Palae·os·tra·ca \ˌpālēˈästrə̇kə, ˌpal- also -ˈȯs-\

Definition of Palaeostraca

in some classifications

  1. :  a class of arthropods comprising the horseshoe crabs, the eurypterids, and sometimes the trilobites — compare merostomata


adjective or noun

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Origin and Etymology of palaeostraca

New Latin, from pale- + -ostraca

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a brief usually trivial fact

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