Goniocranion arambourgi

This species is most recognised for the significantly raised, pyramidal-feature on the top of the skull behind the frontals. The holotype is just the rear section of the neocranium however more recently discovered specimens, like the one below, showcase more of a complete skull including fine villiform teeth.

Distinguishing Characteristics:

Large raised pyramidal section at the top of the skull (1)
No evidence of sclerotic ring in eye orbit (2)
Fine villiform teeth at the front of the premaxilla (3)

Primary Example: Dan Hogburn specimen

Additional example: Holotype NHMUK PV P 9478a

Additional example: NHMUK PV P 9478b

Additional example: NHMUK PV P 26773

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