What evidence is there for the presence of a urohyal bone (a small bone in the throat) in some Triassic dinosaurs?

Jan 7, 2021 ... They lived on Earth in the Mesozoic era, specifically from the late Triassic to the end of the Cretaceous period, a time-span of about 170 ... The Mesozoic is divided into three time periods: the Triassic, Jurassic, and Cretaceous. ... The primitive dinosaurs of the Triassic were neither as abundant nor ... Nov 27, 2024 ... At the beginning of the Triassic period, dinosaurs were one of many lizards roaming the Earth. ... period when dinosaurs rose to power. He ... 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 ... The Triassic period is a part of the geologic timescale where the precursors to dinosaurs (a type of crocodile-like reptiles called archosaurs) were the ... The rock layers that make up the formation were deposited during the Late Triassic Period. ... dinosaurs. Core Pics A selection of Triassic core sections ... Tyrannosaurus rex lived during the Late Cretaceous Period, about 72 million years ago. Stegosaurus was extinct for 66 million years before Tyrannosaurus walked ... What animals were on Earth during the Triassic Period? After the great extinction at the end of the Permian, many new kinds of animals evolved during the ... May 30, 2023 ... The record of dinosaurs in North America begins during the Late Triassic, approximately 225 million years ago. These early dinosaurs were mostly ... Jul 1, 2022 ... These sediments date back to the late Triassic period, around the time of the mass extinction event. "I picture it as a frozen lake," says ...