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Nothosaurs
Ceresiosaurus profile
Physical description
LifespanUnknown
Average Size60 cm-4 m
Average weight8 kilograms-150 kilograms
DietCarnivorous
Conservational Status
StatusExtinct
IUCN statusFossil
Scientific classification
KingdomAnimalia
PhylumChordata
ClassReptilia
OrderSauropterygia
FamilyNothosauroidea
Genus16; see text

Nothosaurus are a group of extinct marine reptiles in the superfamily Nothosauroidea. Along with the placodonts, the nothosaurs were the first major group of reptiles to become mostly aquatic (the earlier, smaller mesosaurs were semi-aquatic) [1] . Nothosaurs were successful throughout the Triassic, and would ultimately give rise to the completely aquatic plesiosaurs, which survived to the end of the Mesozoic era.

Classification Edit

Superfamily Nothosauroidea

Sources Edit

  1. Dinosaurus: The Complete Guide to Dinosaurs

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