Here is a trilobite double from the lower cambium of California of the species Olenellus terminatus. The larger Olenellus terminatus measures about 23 mm and the smaller one only 7 mm. | |||
Location: | Emigrant Pass, San Bernardino County, California, USA | ||
Size Matrix: | about 93 x 42 mm | ||
Age: | Lower Cambrian ,Pyramid Shale, Carrara Formation (about. 520 years) |