21160 - Premium Grade Soft Bodied Xiphosurid (Horseshoe Crab Ancestor) Lower Ordovician Ampyx from the Aoufous Formation and

from the Aoufous Formation and Ifezouane Fm (Kem Kem Basin

in apparent pseudo anatomical connection with the humerus

This specimen is still preserved within the fragment of its jaw or maxillary bone

Dromaeosaurid and Abelisaurid

21160 - Premium Grade Soft Bodied Xiphosurid (Horseshoe Crab Ancestor) Lower Ordovician Ampyx from the Aoufous Formation andXiphosurans are an order of arthropods related to arachnids, or, according to one recent study, actually arachnids. They are sometimes called horseshoe crabs (a name applied more specifically to the only extant family, Limulidae). They first appeared in the Tremadocian (Lower Ordovician) from Fezouata Fm in South Morocco. Currently, there are only four living species. They are members of the order Xiphosura, which contains two suborders, Xiphosurida