Were there any global events during the Triassic that significantly affected dinosaur populations?

Aug 12, 2014 ... In comparison, the dinosaur record in North America is a bit muddier. The most abundant fossils from the Late Triassic period have been ... Mar 28, 2025 ... Reptiles increased in diversity and number, and the first dinosaurs appeared, heralding the great radiation that would characterize this group ... A specialized group of archosaurs, called dinosaurs, first appeared in the Late Triassic but did not become dominant until the succeeding Jurassic Period. Tyrannosaurus rex lived during the Late Cretaceous Period, about 72 million years ago. Stegosaurus was extinct for 66 million years before Tyrannosaurus walked ... Jun 19, 2017 ... The Triassic extinction took place approximately 200 million years ago, and was proceeded by the dinosaur era. One of the largest mass ... Overall the Triassic was dominated by therapsids, which were mammal-like reptiles such as Lystrosaurus, and thecodonts, which were the ancestors of dinosaurs, ... We tend to think of dinosaurs as living in tropical rainforests, and for good reason — the Triassic and Jurassic periods in which they came to rule the ... Dec 24, 2023 ... And plus for some time my favourite dinosaurs were Herrerasaurus and Staurikosaurus, two relatively popular theropods from the period. The rock layers that make up the formation were deposited during the Late Triassic Period. ... dinosaurs. Core Pics A selection of Triassic core sections ... Feb 24, 1997 ... The fossil record reveals that dinosaurs first appeared in the Triassic Period, between 250 to 213 million years ago. It also indicates that ...