Euechinoidea | Article about Euechinoidea by The Free Dictionary
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A subclass of echinoderms in the class Echinoidea; distinguished by the relative stability of ambulacra and interambulacra.
References in periodicals archive
and Cidaroidea respond differently to ocean acidification.
Class ECHINODERMATA Subclass Euechinoidea
Superorder Gnathostomata Order Clypeasteroida Suborder Clypeasterina Family Clypeasteridae Genus Clypeaster LAMARCK, 1801 Clypeaster aff.
It was separated from the Euechinoidea
approximately 250 mya.
jacobyi, document unexpected morphological traits in the late-stage larvae, and discuss how these unexpected traits could help justify a realignment of the currently accepted ordinal-level taxonomy of the Euechinoidea