Description
A textbook example of Glossopleura packi from the Middle Cambrian Chisholm Shale of Nevada. This broad-shielded species represents a turn in trilobite evolution, a stark departure from the graceful and spiny Olenellids that immediate pre-date the Chisholm fauna. This specimen measures 3.9 cm and is nearly perfect. Excellent example.
Age: Middle Cambrian
Species Name: Glossopleura packi
Order / Family: Corynexochida / Dolichometopidae
Locality: Lincoln County, Nevada
Formation: Chisholm Shale
