What evidence is there for the presence of a keeled tail in some Triassic dinosaurs, potentially used for balance?

Texas has hardly any exposed Jurassic rocks and therefore no dinosaurs from that period. Late Triassic. Jurassic. Early Cretaceous. Late Cretaceous. BATCH ONE. Feb 23, 2024 ... The team needed to determine exactly when these sediments were deposited during the Triassic, a 51-million window marking the rise of dinosaurs. 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), ... These incredible creatures dominated the planet through three major geological periods: the Triassic, Jurassic, and Cretaceous periods. Early dinosaurs in the ... Feb 23, 2023 ... Dinosaurs were alive in the Cretaceous, Jurassic, and Triassic Periods, which together comprise the Mesozoic Era. Except for relatively ... 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 ... Dec 23, 2024 ... The dinosaurs that left the footprints in south Wales lived here 220 million years ago. This was in the upper part of the Triassic period (the ... A timeline the dinosaur era. Step into the Mesozoic Era, a captivating ... In the Triassic period, the landscape featured ferns, cycads, and conifers ... The first dinosaurs, prosauropods, early ornithopods, small predators like Eoraptor and Herrerasaurus appeared. · The mammal-like reptiles were declining. · The ... A specialized group of archosaurs, called dinosaurs, first appeared in the Late Triassic but did not become dominant until the succeeding Jurassic Period.