Mormosaurus ("Mormo's Lizard") is a apossible extinct genus of tapinocephalidae. It was first named by Watson in 1914, and contains one species, M. seeleyi. Mormosaurus had a long skull. It's taxonomic status is not settled.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0