Here is a very nice trilobite of the species Ampyxina bellatula from the family of Raphiophoridae. This trilobite has both genal spines nicely preserved. | |||
Location: | Pike County, Missouri , USA | ||
| Size trilobite: | about 11 mm long | ||
| Age: | Upper Ordovician, Maquoketa Formation. (ca. 450 Mill. Years) | ||