obliquus Ivanov, 2005 Cobelodus is an extinct genus of cartilaginous fish known from the late Carboniferous to the early Permian period.

[1][2] The type specimen, assigned to the genus Styptobasis, was discovered by Edward Drinker Cope in Illinois Basin black coal shales.

Cope's description was based from a tooth fragment and was compared to the genus Monocladodus.

Cobelodus differs from Styptobasis and Monocladodus in the anatomy of its teeth and pectoral fins.

Another unusual physical feature of Cobelodus are the 30 centimetres (12 in) long, flexible cartilagenous 'tentacles' sprouting from its pectoral fins.