Apristurus ovicorrugatus

The ridged-egg catshark (Apristurus ovicorrugatus) is a species of catshark native to deep waters off northwestern Australia. The species name refers to the ridges on the egg case. Egg cases belonging to this species had been documented as early as the 1980s, but could not be matched to any species of Australian shark until scientists examined a shark specimen of previously uncertain identity in the CSIRO collection. The holotype is a gravid female collected northwest of the Dampier Archipelago, Western Australia, in 1992.