Opipeuter vs Cyclopyge
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Opipeuter
Opipeuter is an extinct genus of Ordovician trilobites interpreted as pelagic, meaning that it lived in the open water rather than on the sea floor. It is distinguished by greatly enlarged, convex compound eyes, a narrow thorax with eleven segments, reduced fixed cheeks, and a pygidium that ends in a stout spine. Fossils described from Spitsbergen, western Ireland, and Utah have been used in studi...
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Cyclopyge
Exceptionally large compound eyes distinguish Cyclopyge, a genus of Ordovician trilobites. The eyes occupy much of the sides of the cephalon, or head shield, making vision a conspicuous feature of its anatomy. Their extent contrasts with the smaller visual surfaces of many bottom-associated trilobites and has shaped scientific interpretations of how these animals lived.
Cyclopyge belongs to a gro...
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