New plesiosaurs from the Upper Cretaceous of Antarctica

  title={New plesiosaurs from the Upper Cretaceous of Antarctica},
  author={Sankar Chatterjee and Bryan J. Small},
  journal={Geological Society, London, Special Publications},
  pages={197 - 215}
  • S. Chatterjee, B. Small
  • Published 1989
  • Geography, Environmental Science
  • Geological Society, London, Special Publications
Abstract New plesiosaur remains from the Upper Cretaceous Lopez de Bertodano Formation (late Campanian-Maastrichtian) of Seymour Island, Antarctic Peninsula include Cryptoclididae and Elasmosauridae. The occurrence of Cryptoclididae is reported from the Antarctic region for the first time. The taxon represents a new genus and species, based on a skull and associated cervical vertebrae. The long, slender and delicate teeth may have formed a ‘trapping’ device that enabled cryptoclidids to feed on… 
New elasmosaurids (Sauropterygia, Plesiosauria) from the Late Cretaceous of the Magallanes Basin, Chilean Patagonia: Evidence of a faunal turnover during the Maastrichtian along the Weddellian Biogeographic Province
Several Upper Cretaceous plesiosaur specimens recovered from southernmost Chile are described here. These were collected from upper levels of the Dorotea Formation exposed on three different
Cretaceous Antarctic plesiosaurs: stratigraphy, systematics and paleobiogeography
The last twenty million years (Maastrichtian–Santonian) of Southern Hemisphere plesiosaur history is especially well recorded in the Weddellian Province (Patagonia; Western Antarctica and New
The discovery of chimaeroid tooth plates in late Cretaceous deposits on Seymour Island, Antarctica extends the fossil record of the chimaeriform holocephalian fishes and helps to elucidate their
A reappraisal of the Late Cretaceous Weddellian plesiosaur genus Mauisaurus Hector, 1874
A re-assessment of the most complete specimen previously assigned to Mauisaurus suggests it is a typical long-necked elasmosaurid closely comparable to Tuarangisaurus keyesi Wiffen and Moisley, 1986.
Cryptoclidid Plesiosaurs (Sauropterygia, Plesiosauria) from the Upper Jurassic of the Atacama Desert
ABSTRACT This study presents the first plesiosaurs recovered from the Jurassic of the Atacama Desert that are informative at the genus level. One specimen is represented by an articulated axial
The oldest plesiosaur (Reptilia, Sauropterygia) from Antarctica
Antarctic plesiosaurs are known from the Upper Cretaceous López de Bertodano and Snow Hill Island formations (Campanian to upper Maastrichtian), which crop out within the James Ross Basin region of
Osteology of the Cryptocleidoid Plesiosaur Tatenectes laramiensis, with Comments on the Taxonomic Status of the Cimoliasauridae
New fossil material of Tatenectes is described, and the phylogenetic position of this genus is reevaluate based on all known material, with TatenECTes as being most closely related to the Oxford Clay taxon Kimmerosaurus.


Late Campanian–Maastrichtian Ammonite Fauna from Seymour Island (Antarctic Peninsula)
One of the richest and best preserved late Campanian-Maastrichtian ammonite faunas of the world occurs within the Lopez de Bertodano Formation on Seymour Island. The excellent exposure of this
Plesiosaur Ancestors from the Upper Permian of Madagascar
The nature of the Upper Permian sediments in Madagascar and the tectonic environment of their deposition indicate accumulation in deep rift valleys, some parts of which were open to the sea, and the presence of oolites replaced with collophane suggests a rich phosphate source such as deep marine upwellings.
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
Malerisaurus langstoni, a new diapsid reptile from the Triassic of Texas
ABSTRACT A new diapsid reptile, Malerisaurus langstoni, n.sp., from the Late Triassic Dockum Formation of Texas, was a small, gracile, long-necked animal similar to modern bipedal lizards in size,
The skull of a new eosuchian reptile from the Lower Jurassic of South Wales
Comparison with earlier non-archosaurian diapsid reptiles indicates that Gephyrosaurus is a member of the Eosuchia, an infraclass of the subclass Diapsida, and was a small insectivore with large eyes and good hearing.
The Nothosaur Pachypleurosaurus and the Origin of Plesiosaurs
It is concluded that the transition between primitive terrestrial diapsids and plesiosaurs occurred via a succession of changes in patterns of aquatic locomotion and Pachypleurosaurus has the greatest degree of development of the anterior portion of the shoulder girdle, suggesting that the recovery stroke was of considerable importance.
Tooth morphology and prey preference of Mesozoic marine reptiles
The guilds present in six well-preserved faunas of the Jurassic and Cretaceous illustrate the structure of and changes in the large marine predator adaptive zone.
Cretaceous Vertebrates from the Anderson River N.W.T.
Vertebrate remains have been recovered from two horizons in late Cretaceous strata along the east bank of the Anderson River at latitude 69 °N. The lower horizon has produced a fauna very similar to
A Descriptive Catalogue of the Marine Reptiles of the Oxford Clay
THE scientific value of the remains obtained by Messrs. Leeds from the Oxford Clay near Peter-borough is exemplified by the groups forming the subject of the present, and concluding, volume of this
A problematic reptile from the British Upper Trias
  • P. L. Robinson
  • Environmental Science
    Journal of the Geological Society
  • 1973
The adaptive significance of the structural changes that led to the differentiation, during the Triassic, of two important stocks of reptiles, the Lacertilia (lizards) and the sphenodontid