Maxwell, E. E. 2010 Generic reassignment of an ichthyosaur from the Queen Elizabeth Islands, Northwest Territories, Canada Journal of Vertebrate Paleontology 30 403-415 Cymbospondylus Stenopterygius Ichthyosaurus Mollesaurus Brachypterygius Aegirosaurus Ophthalmosaurus Caypullisaurus Platypterygius Maiaspondylus Arthropterygius Osteology Maximum Parsimony Based on reanalysis of the original matrix. Maxwell_2010a