30683 - Well Preserved 1.15 Inch Cyphaspis (Otarion) cf. boutscharafinense Devonian Trilobite Study Mosasauridae) from the Upper Cretaceous

Mosasauridae) from the Upper Cretaceous of Belgium

this specimen presents an additional scientific interest given the classification difficulty

It has some glued but not restored fractures

This variety of quarz is called chalcedony

Goulmimichthys is an extinct genus of ray-finned fishes in the order Elopiformes

30683 - Well Preserved 1.15 Inch Cyphaspis (Otarion) cf. boutscharafinense Devonian Trilobite Study Mosasauridae) from the Upper CretaceousOtarion, Zenker 1833 (trilobite) Trilobita Proetida Aulacopleuridae Synonyms: Conoparia Hawle and Corda 1847 (no. 155231), Otarionella Weyber 1965 (no. 21276) Parent taxon: Aulacopleuridae according to P. A. Jell and J. M. Adrain 2003 See also Jell and Adrain 2002, Sepkoski 2002, Thomas and Owens 1978 and Whittington 1941 Sister taxa: Aulacopleura, Aulacopleurinae, Coignouina, Cyphaspides, Dixiphopyge, Goodsiraspis, Maurotarion, Namuropyge,