Reference

Benson, R. B. J., Ketchum, H. F., Noè, L. F. and Gómez-Pérez, M. 2011b. New information on Hauffiosaurus (Reptilia, Plesiosauria) based on a new species from the Alum Shale Member (Lower Toarcian: Lower Jurassic) of Yorkshire, UK. Palaeontology, 54, 547-571.