Echinoderms, “spiny-skinned” invertebrates, are first found in the Cambrian sedimentary rock layers as 100% echinoderms. The first brittle stars (Echinoderm, class Ophiuroidea) were found in the Early Ordovician sediments and don’t show any evolution. One of the more interesting of the Ophiuroidea is the brittle star (Ophiocoma wendtii).
While snorkeling the waters of Hawaii several years ago, I f… More…
Source: icr.org
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