Undorosaurus: Research Database Theropoda · Cretaceous · Unknown Research Note: Undorosaurus was a theropoda from the Cretaceous of Unknown, providing important data on prehistoric life and ecosystem dynamics. Research Finding Status Grade Year Method Citation Impact Zverkov Efimov 2019: Undorosaurus and related taxa Journal of Systematic Palaeontology Confirmed A 2019 Fossil Zverkov Efimov, … Read more
In Depth        Although named in†‬1999,†‬Mollesaurus got declared as a synonym to Ophthalmosaurus in the following year by a review of the Ophthalmosaurus genus by palaeontologists Michael W.†‬Maisch and Andreas T.†‬Matzke in†‬2000.†‬This conclusion remained for about ten years until†‬2010†‬when a further study by Patrick S.†‬Druckenmiller and Erin … Read more
Mixosaurus: Research Database Reptilia (Ichthyosauria) · Middle-Late Triassic (~240-210 MYA) · Asia — China Research Note: Mixosaurus was a marine reptile from the Triassic of China — an important taxon for understanding the early evolution of marine reptiles during the Triassic period. Research Finding Status Grade Year Method Citation Impact Renesto & Dal … Read more
In Depth        Parrassaurus is a genus of ichthyosaur that lived in waters around Mexico during the late Jurassic. Further reading -†‬A new Tithonian ophthalmosaurid ichthyosaur from Coahuila in northeastern Mexico.†‬-†‬Alcheringa:†‬An Australasian Journal of Palaeontology..†‬-†‬Jair Israel Barrientos†& ‬Jes�s Alvarado-Ortega†‬-†‬2021.
In Depth        Originally described as a species of Ophthalmosaurus†(‬O.†‬chrisorumâ€) ‬a†‬2010†‬study saw the specimens elevated to the level of a distinct genus of ichthyosaur.†‬Arthropterygius was also considered to be similar to Caypullisaurus,†‬but not all researchers have followed this and instead treat Arthropterygius as a basal†(‬primitiveâ€) ‬member of the Ophthalmosauridae.†… Read more
In Depth        Acuetzpalin is a genus of ichthyosaur that lived in waters around what is now central America during the late Jurassic. Further Reading -†‬Acuetzpalin carranzai gen et sp.†‬nov.†‬A new ophthalmosauridae†(‬Ichthyosauriaâ€) ‬from the Upper Jurassic of Durango,†‬North Mexico.†‬-†‬Journal of South American Earth Sciences.†‬-†‬J.†‬I.†‬Barrientos-Lara,†‬J.†… Read more
Nannopterygius: Research Database Theropoda · Cretaceous · Unknown Research Note: Nannopterygius was a theropoda from the Cretaceous of Unknown, providing important data on prehistoric life and ecosystem dynamics. Research Finding Status Grade Year Method Citation Impact Zverkov Jacobs 2021: Nannopterygius and related taxa Zoological Journal of the Linnean Society Confirmed B 2021 Fossil … Read more
In Depth        Originally named as a species of Icthyosaurus by Wagner in†‬1853,†‬Aegirosaurus was raised as a distinct genus by Bardet†& ‬Fernandez some one hundred and forty-seven years later.†‬This is in part down to the wastebasket taxon effect,†‬a common practice in the nineteenth century that saw similar prehistoric animals grouped together … Read more
In Depth        Sisteronia is a genus of ophtahlmosaurid ichthyosaur that lived in European seas during the end of the early Cretaceous to perhaps into the early part of the late Cretaceous. Further Reading -†‬High diversity in Cretaceous ichthyosaurs from Europe prior to their extinction.†‬-†‬PLoS ONE†‬9â€(‬1â€)‬:e84709.†‬-†‬V.†‬Fischer,†‬N.†‬Bardet,†‬M.†… Read more
In Depth        Originally discovered in†‬1951,†‬the holotype fossil of Wahlisaurus was not officially described until sixty-five years later in†‬2016.†‬Wahlisaurus is a leptonectid ichthyosaur noted for having a very long snout.†‬Other ichthyosaurs similar to Wahlisaurus include Leptonectes,†‬Eurhinosaurus and Excalibosaurus. Further Reading -†‬A new leptonectid ichthyosaur from the Lower Jurassic†(‬Hettangianâ€) … Read more