Parrassaurus is an ophthalmosaurid ichthyosaur from the late Jurassic La Caja Formation of Mexico named in 2021. Parrassaurus includes one species, Parrassaurus yacahuitztli.Barrientos-Lara, J. I.; Alvarado-Ortega, J. (2021). "A new Tithonian ophthalmosaurid ichthyosaur from Coahuila in northeastern Mexico". Alcheringa: An Australasian Journal of Palaeontology. in press. doi:10.1080/03115518.2021.1922755. The type specimen (CPC 307) was around long.
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