21143 - Premium Grade Soft Bodied Xiphosurid (Horseshoe Crab Ancestor) + Thoralicystis echinoderm Cyphaspis ("Devil Horned") 12 or 13 teeth on

12 or 13 teeth on a dentary

where a new genus and species of Pterosaur belonging to the Azhdarchidae family is described

Beautiful cranial dermal plate of an indeterminate crocodile from the Upper Cretaceous

which we are preparing right now

Without doubt

21143 - Premium Grade Soft Bodied Xiphosurid (Horseshoe Crab Ancestor) + Thoralicystis echinoderm Cyphaspis ("Devil Horned") 12 or 13 teeth onXiphosurans 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