With the aid of the Fossils of the Oxford Clay book these ammonites would appear to be Kosmoceras spinosum. Unfortunately the exact location is unknown only the fossils were found from the Oxford Clay of Whittlesea.
Ammonite: Kosmoceras spinosum (?)
Geological Age: Jurassic. 157 myo
Stratigraphic Detail: Middle Oxford Clay
Have any other SDGS members collected these in the past.