Jurassic [SEP] named after
Jurassic
The Jurassic period (; from Jura Mountains) is a geologic period and system that spanned 56 million years from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period Mya. The Jurassic constitutes the middle period of the Mesozoic Era, also known as the Age of Reptiles. The start of the period was marked by the major Triassic–Jurassic extinction event. Two other extinction events occurred during the period: the Pliensbachian-Toarcian extinction in the Early Jurassic, and the Tithonian
la Recherche Scientifique, Sep. 1985, Cahiers de Paleontologie, Section Vertebres, Paris, France. 1985:67-96
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