Somasteroidea 5 (34)

Asterozoan taxa, Echinoderm evolution, Marine paleobiology, Ordovician life, Paleozoic fossils / , , , , , , ,

Somasteroidea is the name given to a group of extinct star‑shaped marine animals classified within the phylum Echinodermata and more specifically associated with the subphylum Asterozoa. These ancient organisms lived during the Paleozoic Era, appearing in the Early Ordovician Period (approximately 510–493 million years ago) and becoming extinct by the Late Devonian. Somasteroids are best known from […]

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