The relatively large hind limbs of Eurhinosaurus suggested their use in steering and probably propulsion at a very low speed. The swimming style of Eurhinosaurus was thunniform. Their hypocercal caudal fin, which was mounted on the narrow peduncle, moved through the water in a sinuous curve by the powerful muscles of the posterior trunk and the anterior tail region.
The relatively large hind limbs of Eurhinosaurus suggested their use in steering and probably propulsion at a very low speed. The swimming style of Eurhinosaurus was thunniform. Their hypocercal caudal fin, which was mounted on the narrow peduncle, moved through the water in a sinuous curve by the powerful muscles of the posterior trunk and the anterior tail region.