"Miodentosaurus" is specifically an Askeptosauroid, a specific group of thalattosaurs with rather straight snouts.Despite being closely related to "Askeptosaurus" (a thalattosaur with a very long and toothy snout), "Miodentosaurus" had a quite short snout (shorter than the rest of the head) with only a few conical teeth on the premaxillae and dentaries.