Lomax, D. R.; Massare, J. A.; Evans, M. (2020). "New information on the skull roof of Protoichthyosaurus (Reptilia: Ichthyosauria) and intraspecific variation in some dermal skull elements". Geological Magazine. 157 (4): 640–650. doi:10.1017/S0016756819001225. S2CID210267260.
Lomax, D. R.; Massare, J. A.; Evans, M. (2019). "New information on the skull roof of Protoichthyosaurus (Reptilia: Ichthyosauria) and intraspecific variation in some dermal skull elements". Geological Magazine. 157 (4): 640–650. doi:10.1017/S0016756819001225. S2CID210267260.
McGowan, C. (1996). "The taxonomic status of Leptopterygius Huene, 1922 (Reptilia: Ichthyosauria)". Canadian Journal of Earth Sciences. 33 (3): 439–443. doi:10.1139/e96-033.
Lomax, D. R.; Massare, J. A.; Evans, M. (2020). "New information on the skull roof of Protoichthyosaurus (Reptilia: Ichthyosauria) and intraspecific variation in some dermal skull elements". Geological Magazine. 157 (4): 640–650. doi:10.1017/S0016756819001225. S2CID210267260.
Lomax, D. R.; Massare, J. A.; Evans, M. (2019). "New information on the skull roof of Protoichthyosaurus (Reptilia: Ichthyosauria) and intraspecific variation in some dermal skull elements". Geological Magazine. 157 (4): 640–650. doi:10.1017/S0016756819001225. S2CID210267260.