Palaeophis toliapicus is one of the two types of sea snake which have been found in the London clay. Snake fossils are quite rare and usually found as individual vertebrae in the shingle patches of the beach and extremely rarely found as articulated nodules. Examples can be seen below:
Image accreditation:
Image taken from Tony Mitchell's Database with Tony Mitchell's help and permission.
A history of British fossil reptiles
A history of British fossil reptiles
Acknowledgments:
Thank you very much Tony Mitchell for allowing usage of an image on this page.
References:
https://www.biodiversitylibrary.org/item/99824#page/12/mode/1up
https://www.gbif.org/species/4968179
Further reading: