↑Benson, R. B. J.; Druckenmiller, P. S. (2013). «Faunal turnover of marine tetrapods during the Jurassic-Cretaceous transition». Biological Reviews89: 1-23. PMID23581455. doi:10.1111/brv.12038.
Bakker, R. T., 1993, Plesiosaur Extinction Cycles – events that mark the beginning, middle and end of the Cretaceous: In: Evolution of the Western Interior Basin: Geological Association of Canada, edited by Caldwell, W. G. E., and Kauffman, E. G., Special Paper 39, p. 641-664.
H. F. Ketchum and R. B. J. Benson. 2011. A new pliosaurid (Sauropterygia, Plesiosauria) from the Oxford CLay Formation (Middle Jurassic, Callovian) of England: evidence for a gracile, longirostrine grade of Early-Middle Jurassic pliosaurids. Special Papers in Palaeontology 86:109-129.