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Megacephalosaurus is an extinct genus of brachauchenine[1] pliosaurid plesiosaur known from the early Late Cretaceous Carlile Shale (middle Turonian stage) of Russell County, Kansas, United States. It contains a single species, Megacephalosaurus eulerti.[2] It was one of the latest known member of Pliosauridae family.[3][4]

Temporal range: Late Cretaceous
Megacephalosaurus eulerti.jpg
Holotype skull (FHSM VP 321)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Sauropterygia
Order: Plesiosauria
Family: Pliosauridae
Subfamily: Brachaucheninae
Genus: Megacephalosaurus
Schumacher et al., 2013
Type species
Megacephalosaurus eulerti
Schumacher et al., 2013
Megacephalosaurus eulerti reconstructed skull in the Rocky Mountain Dinosaur Resource Center in Woodland Park, Colorado

See alsoEdit


  1. ^ Benson, R. B. J.; Druckenmiller, P. S. (2013). "Faunal turnover of marine tetrapods during the Jurassic-Cretaceous transition". Biological Reviews. 89 (1): 1–23. doi:10.1111/brv.12038. PMID 23581455.
  2. ^ Schumacher, B. A.; Carpenter, K.; Everhart, M. J. (2013). "A new Cretaceous Pliosaurid (Reptilia, Plesiosauria) from the Carlile Shale (middle Turonian) of Russell County, Kansas". Journal of Vertebrate Paleontology. 33 (3): 613–628. doi:10.1080/02724634.2013.722576.
  3. ^ Daniel Madzia, Sven Sachs and Johan Lindgren (2018). Morphological and phylogenetic aspects of the dentition of Megacephalosaurus eulerti, a pliosaurid from the Turonian of Kansas, USA, with remarks on the cranial anatomy of the taxon. Geological Magazine (advance online publication). doi:
  4. ^ Czech article by paleontologist Daniel Madzia on Pravě website