Prototarpon priscus is one of the species of fish which can be found in the London Clay, examples below:
Image accreditation:
https://data.nhm.ac.uk/object/01aacaef-ecb5-4f51-908b-47c27c92900a
Image accreditation:
https://data.nhm.ac.uk/object/01aacaef-ecb5-4f51-908b-47c27c92900a
Image accreditation:
https://data.nhm.ac.uk/object/01aacaef-ecb5-4f51-908b-47c27c92900a
Image accreditation:
https://data.nhm.ac.uk/object/01aacaef-ecb5-4f51-908b-47c27c92900a