30286 - Gorgeous 2.86 Inch Crotalocephalina (Crotalocephalus) gibbus Lower Devonian Trilobite Cobaltoan calcite Ischyrhiza

Ischyrhiza

Precious tooth of Prognathodon anceps (Mosasaur) from the phosphate deposits of the Ouled Abdoun Basin (Morocco)

It comes from the famous deposits that appear in the Western Sahara

the direction of elongation being perpendicular to the single plane of symmetry

30286 - Gorgeous 2.86 Inch Crotalocephalina (Crotalocephalus) gibbus Lower Devonian Trilobite Cobaltoan calcite IschyrhizaNice and well prepared specimen. Crotalocephalina sp, Pibyl and Vanek 1964 (trilobite) Trilobita Phacopida Cheiruridae Parent taxon: Cheiruridae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Sister taxa: Acanthoparyphinae, Anasobella, Ancyginaspis, Arcticeraurinella, Areia, Areiaspis, Borealaspis, Bornholmaspis, Ceraurinium, Ceraurinus, Cerauroides, Cerauromeros, Cerauropeltis, Ceraurus, Chacomurus, Cheirurinae, Cheirurus,