Named By: Erin E. Maxwell - 2010.
Synonyms: Ophthalmosaurus chrisorum.
Classification: Chordata, Reptilia, Ichthyosauria, Ophthalmosauridae.
Species: A. chrisorum (type), A. thalassonotus.
Size: Uncertain, but various individuals estimated between 3 and 5 meters long.
Known locations: Argentina. Canada, Northwest Territories, Melville Island. Norway. Russia.
Time period: Oxfordian to Kimmeridgian of the Jurassic.
Fossil representation: Well preserved specimens.
Originally described as a species of Ophthalmosaurus (O. chrisorum) 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 (primitive) member of the Ophthalmosauridae.
- The genus Arthropterygius Maxwell (Ichthyosauria: Ophthalmosauridae) in the Late Jurassic of the Neuquén Basin, Argentina. - Geobios. 45 (6): 535–540. - M. S. Fernández & E. E. Maxwell - 2012.
- A prevalence of Arthropterygius (Ichthyosauria: Ophthalmosauridae) in the Late Jurassic—earliest Cretaceous of the Boreal Realm. - PeerJ. 7: e6799. - Nikolay G. Zverkov & Natalya E. Prilepskaya - 2019.