| Here is a large and inexpensive Morocco trilobite of the species Crotalocephalina gibbus from the Ihanda Formation of Atchana. The two outer pygidial thorns are partially restored. | |||
Location: | Atchana, Maider Reg., Morocco | ||
| Size: | about 92 mm lang | ||
| Age: | Lower Devon, Pragian, Ihandar Formation (about 410 mill. y.o.) | ||