What are some examples of Triassic dinosaurs that are considered to be early members of the ornithischian lineage (bird-hipped dinosaurs)?

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 ... Feb 23, 2023 ... Dinosaurs were alive in the Cretaceous, Jurassic, and Triassic Periods, which together comprise the Mesozoic Era. Except for relatively ... Among the first dinosaurs was the two-footed carnivore Coelophysis, which grew up to 9 feet (2.7 meters) tall, weighed up to a hundred pounds (45 kilograms), ... Mar 28, 2018 ... ... Triassic period, emergence of dinosaurs. Michelle Ma. UW News. an ... were present in the Triassic besides the early dinosaurs. “This was ... Dec 5, 2018 ... It was during the Triassic Period that the first dinosaurs began to appear. They were mainly small, nimble animals that walked on two legs. A specialized group of archosaurs, called dinosaurs, first appeared in the Late Triassic but did not become dominant until the succeeding Jurassic Period. ... dinosaur species, which lived in the Triassic period, about 230 million years ago. The fossil was found in the Agudo municipality, in Rio Grande do Sul, the ... Feb 22, 2018 ... The Triassic period took place immediately after one of the ... how dinosaurs were able to survive ... and take over the world.” The ... Jun 16, 2015 ... Climate and plant community instability may have hampered the success of dinosaurs in the tropics during the Late Triassic Period (235-201 ... While dinosaurs were not as abundant or diverse in this area as ... These rocks are from the Mesozoic era, between the Triassic and Cretaceous periods.