Aganaster gregarius (Meek & Worthen, 1869)

( Ophiurina incertae sedis), Early Carboniferous: adGP cleaver-shaped, long, bar-like proximal part with widened distal third, distal abradial edge broadened and flat. abGP absent or perhaps fused to adGP. Articular structures with one or two condyles. RS inner side, abGP and oGP unknown.