While the placement of Parotodus with the Lamniformes has been debated, most researchers agree it was probably a member of a now extinct shark clade, either a otodontid or a cardabiodont.

While originally being suspected of dying out at the very end of the Pliocene, fossils found in the Waccamaw Formation show that it made it to the Pleistocene.

[5] The teeth of Parotodus are distinctively curved and rarely show feeding damage, which suggests that it mainly preyed on soft-bodied animals.

The poster stated that the new species is to be named after Yasuhiro Fudouji, the paleontologist who discovered the type specimens, and will be formally described in an upcoming paper.

This hypothesis is additionally supported by how Parotodus teeth are unusually common in nodule deposits under the Pacific and Indian Oceans and on islands located far away from continental lands.