Condylopyge

Condylopyge Hawle and Corda (1847) is a genus of agnostid trilobite that lived during the late Lower and early Middle Cambrian, in what are today Canada (Newfoundland and New Brunswick), the Czech Republic, England and Wales, France, Germany, Italy, Morocco, the Russian Federation (North-East Siberia), Spain, Turkey and Sweden. It can easily be distinguished from all other Agnostida because the frontal glabellar lobe is notably wider than the rear lobe. It belongs to the same family as "Pleuroctenium" but the frontal glabellar lobe does not fold around the rear lobe, as it does in that genus.
Condylopyge is long ranging, possibly spanning the early Cambrian Terreneuvian Series in Nuneaton, central England into at least Drumian strata (middle stage of the Miaolingian Series) at various locations elsewhere.
Description.
 "Condylopyge" is isopygous with cephalon and pygidium of approximately equal size. The characteristic lateral expansion of the frontal glabellar lobe, occipital structures, and pygidial axis with three pairs of lateral lobes and a terminal piece differentiate Condylopygidae from all other agnostids. The presence of a spine on the occipital band has been recognised as a distinctive feature of condylopygoids (Rushton 1966: p. 29). "Condylopyge" is easily distinguished from its sister taxon, "Pleuroctenium", because the frontal glabellar lobe does not extend partially around the posterior glabellar lobe. Furthermore the frontal glabellar lobe is never bisected medially as in "Pleuroctenium". The pygidium may carry a pair of backwardly directed spines, but this also occurs regularly in "Pleuroctenium". 