This taxon is considered subjective synonym of
of the valid taxon Platecarpus
according to the Paleobiology Database.
See the page for Platecarpus →
Bibliography
Original description
R. W. Gibbes. 1851. Memoir on Mosasaurus and the three allied new genera, Holcodus, Conosaurus, and Amphorosteus. Smithsonian Contributions to Knowledge 2(5):1-13