This Specimen has been sold.
Onnia Trilobite With Occipital Spine
This is a fine example of a Onnia trilobite from Blekos, Morocco. It is very similar to the species Onnia superba, but this one is likely undescribed. The pitted cephalic ring is well preserved as well as the distinctive long genal spines that expend out past it's tail. The occipital spine has been prepared free-standing, a sign of good quality preparation.