Scalamagnus
| Scalamagnus Temporal range: Late Cretaceous (early Turonian),  | |
|---|---|
| Life restoration | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Reptilia | 
| Superorder: | †Sauropterygia | 
| Order: | †Plesiosauria | 
| Family: | †Polycotylidae | 
| Subfamily: | †Polycotylinae | 
| Genus: | †Scalamagnus Clark, O'Keefe & Slack, 2023 | 
| Type species | |
| †Scalamagnus tropicensis Schmeisser McKean, 2012 | |
| Synonyms | |
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Scalamagnus is an extinct genus of polycotylid plesiosaur from the Late Cretaceous Tropic Shale Formation of the United States. The genus contains a single species S. tropicensis, known from a skull and two partial skeletons. Scalamagnus was historically considered to represent a species of the genus Dolichorhynchops before it was moved to its own genus.