Name: Abyssosaurus.
Phonetic: Ah-biss-so-sore-us.
Named By: A.‭ ‬Yu.‭ ‬Berezin‭ ‬-‭ ‬2011.
Classification: Choradata,‭ ‬Reptilia,‭ ‬Sauropterygia,‭ ‬Plesiosauria,‭ ‬Cryptoclididae.
Species: A.‭ ‬nataliae‭ (‬type‭)‬.
Diet: Piscivore.
Size: Unavailable.
Known locations: Russia,‭ ‬Chuvashia/Chuvash Republic.
Time period: Hauterivian of the Cretaceous.
Fossil representation: Partial post cranial remains.

       Abyssosaurus is a genus of plesiosaur that lived in Russia during the Early Cretaceous.‭ ‬At the time of its description Abyssosaurus was identified as a link between Late Jurassic forms such as Tatenectes and Kimmerosaurus,‭ ‬and Late Cretaceous forms such as Aristonectes and Kaiwhekea.‭ ‬A slightly later study in‭ ‬2013‭ ‬by Benson‭ & ‬Druckenmiller identified Abyssosaurus as a close relative of Colymbosaurus.

Further reading
-‭ ‬A new plesiosaur of the family Aristonectidae from the Early Cretaceous of the center of the Russian Platform.‭ ‬-‭ ‬Paleontological Journal‭ ‬45‭(‬6‭)‬:648-660.‭ ‬-‭ ‬A.‭ ‬Yu.‭ ‬Berezin‭ ‬-‭ ‬2011.


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