Name: Ceratarges cognatus van Viersen, 2006
Stratigraphy: Vieux Moulin Member, Jemelle Formation; lower Eifelian
Locality: Mur des douaniers locality, Vireux-Molhain, Ardennes, France

Ceratarges cognatus was a fairly rare species at the Mur des douaniers locality. It is characterised by its large, cylindrical pygidial axis with comparatively far posteriorly positioned dorsal spine. A feature shared with Ceratarges koumalii from Morocco is the wholly strongly vaulted cephalon.

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