Onchocephalites sp.

Onchocephalites

Name: Onchocephalites sp. (Sundberg and McCollum, 2003)
Trilobite Order Ptychopariida, Family Ptychoparioidea
Locality: Currant site, White Pine County, Nevada
Stratigraphy: Middle Cambrian, Emigrant Formation
Remarks: 7 mm. This is almost certainly the most perfectly preserved on this newly described genus. It was found in a locality from where it has not been known before. As a matter of fact, this whole area has only been superficially studied. This specimen has 15 segments. O claytonensis as described by Sundberg and McCollum states it has 11-13 segments. It was found within a thin, soft mud stone layer found between limestone layers
Credits: Richie Kurkewicz Pangaea Collection; prepared using air abrasion by Dave Comfort

Onchocephalites

Name: Onchocephalites claytonensis (Sundberg and McCollum, 2003)
Trilobite Order Ptychopariida, Family Ptychoparioidea
Locality: Lincoln Co., Nevada
Stratigraphy: Middle Cambrian, Emigrant Formation
Remarks: 15 mm
Credits: Courtesy of Perry J. Damiani