due to the paucity of remains of "genyodectes", it is difficult to discern possible synapomorphies of the group from autapomorphies of "ceratosaurus"; e.g. "ceratosaurus" is different from other ceratosaurians by the very prominent horn on its snout; "genyodectes", however, was not found with a complete skull; whether it had a horn is unknown, so it cannot establish that the horn was a shared derived feature of the group.