A new plesiosaur of the family aristonectidae from the early cretaceous of the center of the Russian platform

@article{Berezin2011ANP,
  title={A new plesiosaur of the family aristonectidae from the early cretaceous of the center of the Russian platform},
  author={A. Yu. Berezin},
  journal={Paleontological Journal},
  year={2011},
  volume={45},
  pages={648-660}
}
  • A. Berezin
  • Published 2 December 2011
  • Geology
  • Paleontological Journal
A new plesiosaur, Abyssosaurus nataliae gen. et sp. nov. from the Upper Hauterivian Substage (Lower Cretaceous) of Chuvashia, is described based on a postcranial skeleton. The new taxon is assigned to the family Aristonectidae where it presumably occupies an intermediate position between Late Jurassic Tatenectes and Kimmerosaurus and Late Cretaceous Aristonectes and Kaiwhekea. This is the first reliable record of this family in Russia. 
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Abstract A newly prepared elasmosaurid plesiosaur specimen, from the Haumurian (Upper Cretaceous) Conway Formation of North Canterbury, is more complete than any found previously in New Zealand. The
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