Nileoides vs Cyclopyge
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Nileoides
Nileoides is an extinct genus of asaphid trilobites from the Ordovician Period. It is recorded from the Lower to Middle Ordovician and is placed in the family Asaphidae, although its relationships within the group have been discussed because its exoskeleton is strongly effaced, with many surface furrows reduced. The type species, Nileoides perkinsi, is known from the Upper Chazy Group of Vermont a...
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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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