The Morrison formation is composed of sedimentary rock from this period, which is named for a mountain range on the Swiss-French border.
The Morrison formation is composed of sedimentary rock from this period, which is named for a mountain range on the Swiss-French border. The Nevadan Orogeny occurred during this period, and coralline algae first appeared during this time. The Tethys Sea was formed during this period when Pangaea (*) divided into Laurasia and Gondwana, and its Tithonian stage preceded the Cretaceous period. This period saw the evolution of flying birds, like the archeopteryx [ar - kee - OP - ter - iks], as well as sauropods such as the apatosaurus and the brachiosaurus. For ten points, identify this period of the Mesozoic era following the Triassic which is known for the proliferation of dinosaurs.
The Morrison formation is composed of sedimentary rock from this period, which is named for a mountain range on the Swiss-French border.
{Jurassic} period