? Plesiosauroidea Rango fósil: Jurásico inferior - Cretácico superior
Muraenosaurus.
Clasificación científica
Reino:	Animalia
Filo:	Chordata
Clase:	Sauropsida
Superorden:	Sauropterygia
Orden:	Plesiosauria
Suborden:	Plesiosauroidea Gray, 1825
Familias y géneros
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Plesiosauroidea es un suborden de saurópsidos plesiosaurianos, que vivieron desde el Jurásico inferior hasta el Cretácico superior.

Sistemática

• Suborden Plesiosauroidea
  • Plesiopterys
  • Familia Plesiosauridae
    • Attenborosaurus
    • Plesiosaurus
  • Clado Euplesiosauria
    • Eretmosaurus?
    • Leurospondylus?
    • Superfamilia Cryptoclidoidea
      • Familia Cryptoclididae
        • Tatenectes?
        • Colymbosaurus?
        • Cryptoclidus
        • Muraenosaurus
        • Pantosaurus
        • Vinialesaurus
      • Clado Tricleidia
        • Familia Tricledidae
          • Tricleidus
        • Familia Cimoliasauridae
          • Aristonectes?
          • Kaiwhekea
          • Kimmerosaurus
        • Familia Polycotylidae
          • Edgarosaurus?
          • Georgiasaurus?
          • Polycotylus
          • Dolichorhynchops
          • Trinacromerum
          • Sulcusuchus
          • Thililua
        • Familia Elasmosauridae
          • Morenosaurus?
          • Occitanosaurus
          • Microcleidus
        • Familia Elasmosauridae
          • Futabasaurus?
          • Woolungasaurus?
          • Fresnosaurus?
          • Goniosaurus?
          • Mauisaurus?
          • Aphrosaurus?
          • Hydrotherosaurus?
          • Hydralmosaurus?
          • Terminonatator?
          • Turangisaurus'?
          • Thalassomedon?
          • Elasmosaurus
          • Brancasaurus
          • Callawayasaurus
          • Libonectes
          • Styxosaurus

Referencias

• Carpenter, K. 1996. A review of short-necked plesiosaurs from the Cretaceous of the western interior, North America. Neues Jahrbuch fuer Geologie und Palaeontologie Abhandlungen (Stuttgart) 201(2):259-287.
• Carpenter, K. 1997. Comparative cranial anatomy of two North American Cretaceous plesiosaurs. Pp 91-216, in Calloway J. M. and E. L. Nicholls, (eds.), Ancient Marine Reptiles, Academic Press, San Diego.
• Carpenter, K. 1999. Revision of North American elasmosaurs from the Cretaceous of the western interior. Paludicola 2(2):148-173.
• Cicimurri, D., and M. Everhart, 2001: in Trans. Kansas. Acad. Sci. 104: 129-143
• Cope, E. D. 1868. Remarks on a new enaliosaurian, Elasmosaurus platyurus. Proceedings of the Academy of Natural Sciences of Philadelphia 20:92-93.
• Ellis, R. 2003: Sea Dragons' (Kansas University Press)
• Everhart, M. J., 2000. Gastroliths associated with plesiosaur remains in the Sharon Springs Member of the Pierre Shale (Late Cretaceous), western Kansas. Kansas Acad. Sci. Trans. 103(1-2):58-69.
• Everhart, M. J. 2002. Where the elasmosaurs roam… Prehistoric Times 53: 24-27.
• Everhart, M. J. 2004. Plesiosaurs as the food of mosasaurs; new data on the stomach contents of a Tylosaurus proriger (Squamata; Mosasauridae) from the Niobrara Formation of western Kansas. The Mosasaur 7:41-46.
• Everhart, M. J. 2005. Bite marks on an elasmosaur (Sauropterygia; Plesiosauria) paddle from the Niobrara Chalk (Upper Cretaceous) as probable evidence of feeding by the lamniform shark, Cretoxyrhina mantelli. PalArch, Vertebrate paleontology 2(2): 14-24.
• Everhart, M.J. 2005. "Where the Elasmosaurs roamed," Chapter 7 in Oceans of Kansas: A Natural History of the Western Interior Sea, Indiana University Press, Bloomington, 322 p.
• Everhart, M.J. 2005. "Gastroliths associated with plesiosaur remains in the Sharon Springs Member (Late Cretaceous) of the Pierre Shale, Western Kansas" (on-line, updated from article in Kansas Acad. Sci. Trans. 103(1-2):58-69)