This period saw the formation of the Karoo basalt and a rift event that lead to a large dome forming in the North Sea region. The ending of the previous timespan and the beginning of this period saw the formation of the Newark Supergroup, which led to the creation of the Palisades. Nevadan orogeny and the Toarcian anoxic event occurred during this period, which also saw the closing of the Tethys ocean. The Morrison Formation is one of the most important sources of its dinosaurs, such as Allosaurus, Apatosaurus, and Stegosaurus. For 10 points, name this period of the Mesozoic era coming before 
This period saw the formation of the Karoo basalt and a rift event that lead to a large dome forming in the North Sea region. The ending of the previous timespan and the beginning of this period saw the formation of the Newark Supergroup, which led to the creation of the Palisades. Nevadan orogeny and the Toarcian anoxic event occurred during this period, which also saw the closing of the Tethys ocean. The Morrison Formation is one of the most important sources of its dinosaurs, such as Allosaurus, Apatosaurus, and Stegosaurus. For 10 points, name this period of the Mesozoic era coming before the Cretaceous and after the Triassic.
This period saw the formation of the Karoo basalt and a rift event that lead to a large dome forming in the North Sea region.
Jurassic period