Ce taxon est considéré comme subjective synonym of
du taxon valide Elasmosaurinae
selon la Paleobiology Database.
Voir la fiche de Elasmosaurinae →
Bibliographie
Description originale
R. A. Otero. 2016. Taxonomic reassessment of Hydralmosaurus as Styxosaurus: new insights on the elasmosaurid neck evolution throughout the Cretaceous. PeerJ 4:e1777:1-60
DOI ↗