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Contact

About the author
Email: plesiosauria@gmail.com
Follow: @adamstuartsmith

Higher taxa

  • Sauropterygia
  • Eosauropterygia
  • Eusauropterygia
  • Pachypleurosauria
  • Nothosauria
  • Pistosauroidea
  • Pistosauria
  • Plesiosauria
  • Pliosauroidea
  • Plesiosauroidea

Families

  • Aristonectidae
  • Brachauchenidae
  • Cimoliasauridae
  • Cryptoclididae
  • Elasmosauridae
  • Leptocleididae
  • Microcleididae
  • Plesiosauridae
  • Pliosauridae
  • Polycotylidae
  • Rhomaleosauridae

Genera

The genera section is under construction, active pages are indicated by an asterisk

  • Alexeyisaurus
  • Alzadosaurus
  • Aphrosaurus
  • *'Apractocleidus'
  • *Archaeonectrus
  • *Aristonectes
  • *Attenborosaurus
  • Augustasaurus
  • Bathyspondylus
  • Bishanopliosaurus
  • *Bobosaurus
  • Borealonectes
  • Brachauchenius
  • *Brancasaurus
  • Callawayasaurus
  • 'Cimoliasaurus'
  • Claudiosaurus
  • Colymbosaurus
  • *Cryptoclidus
  • Cymatosaurus
  • Dactylosaurus
  • Dolichorhynchops
  • *Edgarosaurus
  • *Elasmosaurus
  • Eopolycotylus
  • *Eretmosaurus
  • Eromangasaurus
  • Eurycleidus
  • Fresnosaurus
  • Futabasaurus = 'Futabasuzukiryu'
  • Gallardosaurus
  • Georgiasaurus
  • *Hauffiosaurus
  • Hydralmosaurus
  • Hydrorion
  • Hydrotherosaurus
  • *Kaiwhekea
  • Kimmerosaurus
  • *Kronosaurus
  • *Leptocleidus
  • Leurospondylus
  • *Libonectes
  • *Liopleurodon
  • *Lusonectes
  • *Macroplata
  • *Manemergus
  • *Maresaurus
  • *Marmornectes
  • Mauisaurus
  • Megalneusaurus
  • *Meyerasaurus
  • Microcleidus
  • Morenosaurus
  • *'Morturneria'
  • Muraenosaurus
  • Nichollssaura
  • *Occitanosaurus
  • *'Ogmodirus'
  • Opallionectes
  • *Pachycostasaurus
  • Pahasapasaurus
  • Palmulasaurus
  • Pantosaurus
  • Peloneustes
  • Pistosaurus
  • Plesiopleurodon
  • Plesiopterys
  • *Plesiosaurus
  • Pliosaurus
  • Polycotylus
  • Polyptychodon
  • *Rhomaleosaurus
  • Seeleyosaurus
  • Scanisaurus
  • *Simolestes
  • Sthenarosaurus
  • 'Stretosaurus'
  • Strongylokrotaphus
  • Styxosaurus
  • Sulcusuchus
  • Tatenectes
  • Terminonatator
  • *Thalassiodracon
  • *Thalassomedon
  • 'Thaumatosaurus'
  • *Thililua
  • Trememesacleis'
  • *Tricleidus
  • Trinacromerum
  • Tuarangisaurus
  • Umoonasaurus
  • Vinialesaurus
  • Wapuskanectes
  • Westphaliasaurus
  • Woolungasaurus
  • Yuzhoupliosaurus
  • Zarafasaura

Libonectes Carpenter, 1997

Libonectes was erected for 'Elasmosaurus morgani'. The pectoral girdle and a forelimb of the holotype are figured (most recently by Welles 1962, fig. 12) but are now lost (Carpenter 1999). Libonectes morgani is the type and only species.

Classification

Sauropterygia --> Eosauropterygia --> Eusauropterygia --> Pistosauroidea --> Plesiosauria --> Plesiosauroidea --> Elasmosauridae

L. morgani (Welles, 1949)

Material

Type material: SMUSMP 69120, Skull, cervical vertebrae and gastralia.

Age and Location

Britton Formation, Eagle Ford Group (Turonian, Upper Cretaceous). Near Cedar Hill, Dallas County, Texas, USA.

Libonectes images

  • Skull and mandible of Libonectes (modified from Carpenter, 1997).

  • Skull and mandible of Libonectes showing details of internal structure and braincase (modified from Carpenter, 1997).

Popular pages

Liopleurodon

Plesiosaurus

Locomotion

Living plesiosaurs?

Crystal Palace plesiosaurs

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Further reading

Playtime

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The skeletons in the site header are (from left to right): Kronosaurus (in the Museum of Comparative Zoology, Harvard University, Cambridge), Thalassomedon (in the American Museum of Natural History, New York), Cryptoclidus (In the Hunterian Museum and Art Gallery, Glasgow), Rhomaleosaurus (in the Natural History Museum, London), Dolichorhynchops (in the Smithsonian Institution's National Museum of Natural History, Washington) and Thalassiodracon (in the Natural History Museum, London).

©2011 Copyright Adam S. Smith. This site opened in June 2001. Last updated January 2012.