ammonites
Arthropterygius Maxwell 2010 (ichthyosaur)

Reptilia - Ichthyosauria - Ophthalmosauridae

Full reference: E. E. Maxwell. 2010. Generic reassignment of an ichthyosaur from the Queen Elizabeth Islands, Northwest Territories, Canada. Journal of Vertebrate Paleontology 30(2):403-415

Parent taxon: Ophthalmosauridae according to V. Fischer et al. 2013

Sister taxa: Acamptonectes, Aegirosaurus, Athabascasaurus, Baptanodon, Brachypterygius, Caypullisaurus, Cryopterygius, Maiaspondylus, Mollesaurus, Nannopterygius, Ochevia, Ophthalmosaurinae, Ophthalmosaurus, Palvennia, Platypterygiinae, Platypterygius, Sveltonectes, Undorosaurus

Subtaxa: Arthropterygius chrisorum

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Ecology: nektonic carnivore