Ptyocephalus yersini Ordovician Trilobite from Utah

Ptyocephalus yersini

Class Trilobita, Order Asaphida, Superfamily Asaphoidea, Family Asaphidae, Subfamily Ptyocephalinae

Geologic Age: Ordovician

Size (25.4 mm = 1 inch): 10 x 10 mm

Fossil Site: Fillmore Formation, Pogonip Group, Millard County, Utah

Code: TR089

Price: Sold

Description: This is a trilobite known as Ptyocephalus yersini, an Asaphid from the Subfamily Ptyocephalinae. The rarer species is seldom available. This is an enrolled specimen.

Utah (as well as other Western States) is well known for its Cambrian fauna and trilobites in particular. Trilobites from the Ordovician also occur but in far fewer exposures. In Utah, the Fillmore, Garden City, Pononip, Swan Peak, and Wah Wah Formations yield Ordovician trilobites. No trilobites from Utah are known that are younger than the middle Ordovician. This trilobites comes from my own lease in the lower, middle Ordovician Fillmore formation. These trilobites are not commonly offered.

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Pseudocybele yersini Ordovician Trilobite from Utah
Pseudocybele yersini Ordovician Trilobite from Utah

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