a new elasmosaurid plesiosaur from the Lower Jurassic of southern France

  title={a new elasmosaurid plesiosaur from the Lower Jurassic of southern France},
  author={Nathalie Bardet and Pascal Godefroit and Jacques Sciau},
Plesiosaurus tournemirensis Sciau, Crochet and Mattei, based on a nearly complete skeleton with skull from the Upper Toarcian (Lower Jurassic) of Tournemire (Aveyron Department, southern France), is here redescribed and reinterpreted. Comparisons with other plesiosaurs indicate that it belongs to a new genus, Occitanosaurus. O. tournemirensis is characterized mainly by its spatulate premaxillae with short facial process, very high postorbital broadly contacting posterior ramus of the maxilla… 


Cladistic analysis using 43 discrete cranio-dental and vertebral characters coded for 16 ingroup and one outgroup taxon supports this conclusion, indicating that E. carinognathus is a crown-group elasmosaurid of more derived grade than Occitanosaurus (Lower Jurassic, Toarcian, France).

A new plesiosaur from the Lower Jurassic of Portugal and the early radiation of Plesiosauroidea

This plesiosaur partial skeleton, comprising most of the trunk and including axial, limb, and girdle bones, was collected in the lower Sinemurian of Praia da Concha and testifies to the incursion of marine reptiles in the newly formed proto-Atlantic sea, prior to the Atlantic Ocean floor spreading in the Early Cretaceous.

Albertonectes vanderveldei, a New Elasmosaur (Reptilia, Sauropterygia) from the Upper Cretaceous of Alberta

ABSTRACT A new elasmosaurid plesiosaur, Albertonectes vanderveldei, gen. et sp. nov., is described on the basis of an almost complete postcranial skeleton from the upper Campanian, Bearpaw Formation

A New Plesiosauroid from the Toarcian (Lower Jurassic) of Alhadas, Portugal

A partial plesiosauroid skull from the São Gião Formation (Toarcian, Lower Jurassic) of Alhadas, Portugal is re-evaluated and described as a new taxon, Lusonectes sauvagei gen. et sp. nov. It has a


The dental morphology and peculiar occlusal pattern, forming an interlocking trap, suggest that Aristonectes strained a diet of small, soft organisms from the water.


Abstract A new elasmosaur, Terminonatator ponteixensis, gen. et sp. nov., from the Upper Campanian Bearpaw Formation of southwestern Saskatchewan, Canada, is one of the youngest plesiosaurs from the

Anningasaura, A Basal Plesiosaurian (Reptilia, Plesiosauria) from the Lower Jurassic of Lyme Regis, United Kingdom

Anningasaura lymense is a plesiomorphic Early Jurassic taxon that provides anatomical data that clarify the early evolutionary history of Plesiosauria, and is made the holotype of a new genus and species.

Two new species of long-necked plesiosaurians (Reptilia: Sauropterygia) from the Upper Jurassic (Middle Volgian) Agardhfjellet Formation of central Spitsbergen

The Middle Volgian age of this material helps to bridge the temporal and morphological gap between better known Middle and Late Jurassic plesiosaurians from Europe and Late Cretaceous taxa primarily known from North America.

Cranial Anatomy of Thalassiodracon hawkinsii (Reptilia, Plesiosauria) from the Early Jurassic of Somerset, United Kingdom

The relatively long neck and small skull of Thalassiodracon indicate that the robust skeleton and macropredaceous habits of rhomaleosaurids and pliosaurids were derived independently.



New plesiosaurs from the Upper Cretaceous of Antarctica

  • S. ChatterjeeB. Small
  • Geography, Environmental Science
    Geological Society, London, Special Publications
  • 1989
Abstract New plesiosaur remains from the Upper Cretaceous Lopez de Bertodano Formation (late Campanian-Maastrichtian) of Seymour Island, Antarctic Peninsula include Cryptoclididae and Elasmosauridae.

Comparative Cranial Anatomy of Two North American Cretaceous Plesiosaurs

Functional anatomy of the head of the large aquatic predator Rhomaleosaurus zetlandicus (Plesiosauria, Reptilia) from the Toarcian (Lower Jurassic) of Yorkshire, England

The skull and mandible of the type specimen of the large pliosauroid plesiosaur Rhomaleosaurus zetlandicus from the Toarcian of England are elongate, and adapted for powerful predatory activity in

On a new Species of Plesiosaurus (P. Conybeari) from the Lower Lias of Charmouth; with Observations on P. megacephalus, Stutchbury, and P. brachycephalus, Owen

  • W. J. Sollas
  • Geology
    Quarterly Journal of the Geological Society of London
  • 1881
The nearly complete and very fine specimen of Plesiosaurus (Pl. XXIII. fig. 1) which forms the subject of the present paper is the latest addition to the already large collection of fossil reptiles

Cranial anatomy of a new plesiosaur genus from the lowermost Lias (Rhaetian/Hettangian) of Street, Somerset, England

ABSTRACT A newly prepared plesiosaur skull collected by Thomas Hawkins (1810–1889) from the Lias quarries of Street, Somerset, England, provides important indications of character polarity within the

First Callovian plesiosaurs from the Neuquen Basin, Argentina

The first Callovian Elasmosauridae, Cryptoclididae and Pliosauridae (Reptilia: Plesiosauria) have been discovered in the Eastern South Pacific and the presence of similar forms in theEastern South Pacific, that may belong to the same genera, suggests biogeographical links with the European Tethys.

Note on some of the Generic Modifications of the Plesiosaurian Pectoral Arch

  • H. Seeley
  • Geography
    Quarterly Journal of the Geological Society of London
  • 1874
If not having a sternum the Plesiosauria differ from the Crocodilia and from all the Lacertian orders of Reptiles. Serpents with limbs being as yet undiscovered, the only true Reptilia which admit of

Late Cretaceous reptiles (Families Elasmosauridae and Pliosauridae) from the Mangahouanga Stream, North Island, New Zealand

Abstract Incomplete reptile specimens from rocks of Piripauan-Haumurian age (Campanian-Maastrichtian), that represent the first records of elasmosaurs and pliosaurs from the North Island of New

Description of a New Species of Plesiosaurus, in the Museum of the Bristol Institution

  • Samuel Stutchbury
  • Environmental Science
    Quarterly Journal of the Geological Society of London
  • 1846
The animal about to be described in the following pages was discovered in the grey lias, which is largely quarried throughout Somersetshire for building-stone and other economic purposes. The remains