This taxon is considered nomen dubium, species not entered
of the valid taxon Ichthyosaurus
according to the Paleobiology Database.
See the page for Ichthyosaurus →
Bibliography
Original description
C. McGowan. 1989. Leptopterygius tenuirostris and other long-snouted ichthyosaurs from the English Lower Lias. Palaeontology 32(3):409-427