Scombramphodon sheppeyensis

Known from only one partial skull, there is some debate over whether Scombramphodon sheppeyensis is in fact a valid taxon within the London Clay or represents an incomplete skull of another species. Monsch (2005) speculates this could be a junior synonym for Duplexdens macropomus as it is missing the double row of teeth present in Scombramphodon. The wide base, heavily-striated teeth however do look very similar to that of Scombramphodon.

Distinguishing Characteristics:

Sclerotic ossicle present in orbit (1)
Robust, sharp teeth (2)

Primary Example: HOLOTYPE NHMUK PV OR 28755

3D Scan: HOLOTYPE NHMUK PV OR 28755

3D scans undertaken by Tom Sermon with permission. From the collections of the Natural History Museum, London

CT Scan: HOLOTYPE NHMUK PV OR 28755

CT scans kindly provided by the Natural History Museum, London with permission. From the collections of the Natural History Museum, London

References

Casier, E. (1966) Fauna ichthyologique du London Clay. British Museum Natural History London, 1966, 1-496
Monsch, K (2005) Revision of the scombroid fishes from the Cenozoic of England
Raynor, Mitchell, Clouter (2009) London Clay Fossils of Kent and Essex