Asaphus holmi Russian Trilobite

Asaphus holmi

Class Trilobita; Order Asaphida; Superfamily Asaphoidea; Family Asaphidae

Geological Time: Middle Ordovician

Size: 115 mm

Fossil Site: Asery level, St. Petersburg region, Wolchow river, Russia

Asaphus holmiAsaphus holmi is one of the moderately scarce Russian Asaphids, and near the end of an evolutionary branch decended from Asaphus cornutus. At about 4 1/2 inches in length, it is also near the size limit for the species. It sets fully stretched and inflated centered on a large piece of Ordovician seafloor.

Also see: Russian Asaphida Trilobites Russian Trilobites Russian Asaphidae Evolution Sequence

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