However, modern " Scyliorhinus " egg capsules are smoother than the Bear River Seep Deposit fossils, casting doubt on this possibility.
2.
A less likely candidate mother would be the genus " Scyliorhinus ", which also has a fossil record stretching back to the Eocene.
3.
At one time, the West African catshark was considered to be a subspecies of the nursehound, " Scyliorhinus stellaris ", but is now considered to be a separate species.
4.
The "'yellowspotted catshark "', " Scyliorhinus capensis ", is a rare catshark of the 37?S . It can grow up to a length of about.
5.
The "'whitesaddled catshark "', " Scyliorhinus hesperius ", is a species of catshark, and part of the oviparous but otherwise, little is known about its biology.
6.
The "'cloudy catshark "'( " Scyliorhinus torazame " ) is a common species of catshark, belonging to the bottom-dweller that inhabits rocky reefs in the northwestern Pacific Ocean, from the shore to a depth of.
7.
The size of egg cases vary; those of the small-spotted catshark or lesser spotted dogfish, " Scyliorhinus canicula ", are around long, while those of the greater spotted dogfish, " S . stellaris ", are around.
8.
The "'blotched catshark "'( " Scyliorhinus meadi " ) is a little-known species of catshark, and part of the family commercial significance; the International Union for Conservation of Nature ( IUCN ) does not have enough data to assess its conservation status.
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