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The first fossils of Maiasaura were discovered in 1978
This is the group that contains everything from the common octopus to the confusingly-named Vampire "squid
The origin of these remains was long a matter of debate
Illustrated window box
Plesiosaurus Skull cast replica for sale Alma The first fossils of MaiasauraPlesiosaurus Skull cast replica for sale (Elasmosaurid) Thalassomedon hanningtoni. Plesiosaurs were among the first fossil reptiles discovered. Plesiosaurs first appeared in the latest Triassic Period, possibly in the Rhaetian stage. They became especially common during the Jurassic Period, thriving until their disappearance due to the CretaceousPaleogene extinction event at the end of the Cretaceous Period. Detached from the giant marine reptile of