 Although this snout configuration is not known in any other thalattosaurians, "Miodentosaurus" does share a number of other features with Askeptosauroids, such as having 10 neck vertebrae and a large pineal foramen.Apart from its unique cranial features, "Miodentosaurus" also has characteristically flat front claws and the two specimens known were both more than four meters long, making it one of the largest thalattosaurs known.The holotype of "Miodentosaurus brevis", NMNS 004727 / F003960, a well-preserved and fairly complete articulated skeleton, was discovered in the Triassic Falang Formation of China, where other thalattosaurs as "Anshunsaurus huangguoshuensis" and "Concavispina biseridens" were found.