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meaning: "Styx lizard"
Named By: Samuel Paul Welles in 1943
Time Period: Late Cretaceous, 83.5-80.5 Ma
Location: USA, Kansas, and South Dakota
Size: 11 to 12 meters long
Diet: Piscivore
Fossil(s): At least two specimens
Classification: | Chordata | Reptilia | Sauropterygia | Plesiosauria | Elasmosauridae |
Also known as: | Alzadasaurus kansasensis | Alzadasaurus pembertonii | Cimoliasaurus snowii | Elasmosaurus snowii | Thalassiosaurus ischiadicus | Thalassonomosaurus marshi |

Styxosaurus is a genus of plesiosaur of the family Elasmosauridae. Styxosaurus lived during the Santonian and Campanian ages of the Cretaceous period.

Read more about Styxosaurus at Wikipedia
PaleoCodex is a weekend hack by Saurav Mohapatra