Tetraceratops

In Depth        Tetraceratops has proven a headache for palaeontologists since its discovery,‭ ‬as it is either a pelycosaur,‭ ‬or potentially an early form of the coming therapsids that would displace the pelycosaurs as dominant predators.‭ ‬Evidence to support the therapsid theory comes from similarities in the temporal fenestra between Tetraceratops and biarmarosuchians,‭ ‬primitive therapsids that … Read more