Here is a rich trilobite plate from the Weeks Formation of Utah. The largest specimen is about 11 mm long and all trilobites are the species Cedaria minor. | |||
Location: | Millard Co., Utah, USA | ||
Size Plate: | about 160 x 80 mm | ||
Age: | Upper Cambrian, Weeks Fm., (about. 518 Mill. y.o.) |