Proetus vs Cyphaspis
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Proetus
Proetus is a genus of proetid trilobites that lived mainly during the Devonian Period. Fossils assigned to the genus have been reported from Europe and North America, although the exact range varies among species and taxonomic treatments. Proetus is part of the proetid lineage, one of the trilobite groups that survived into the late Paleozoic. The genus is used in research on Devonian marine fauna...
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Cyphaspis
Cyphaspis is a Devonian trilobite genus in the proetid family Otarionidae. It is recognized by pedunculate eyes and spiny, granulate ornamentation, features that give many specimens a strongly textured appearance. The genus was described by Frederick McCoy in 1849 and is especially familiar in discussions of Devonian proetid trilobites, including material from Morocco. It is suited to collectors a...
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