What evidence is there for the presence of a nictitating membrane (third eyelid) in some Triassic dinosaurs?

Mar 22, 2010 ... ... dinosaurs' rise as the Triassic Period ended. Fossil and carbon ... Thanks to the climatic catastrophe, those early, small dinosaurs were ... Apr 28, 2023 ... During the Triassic, the first dinosaurs walked on the land, the first pterosaurs sailed through the skies, and the first ichthyosaurs and plesiosaurs swam in ... Thalattosaurs are another type of ancient marine reptile that lived during the mid-late Triassic Period in what is now Alaska. They are not yet known from ... 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 ... The dinosaur tracks were found in what was the shoreline sediments along the margins of lakes and streams. The fossils indicate that the Newark Supergroup was ... Texas has hardly any exposed Jurassic rocks and therefore no dinosaurs from that period. Late Triassic. Jurassic. Early Cretaceous. Late Cretaceous. BATCH ONE. Mar 28, 2018 ... The earliest mammals entered the scene, and reptiles — including early dinosaurs — lived on Pangea, the name given to the giant landmass in ... 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 ... Oct 10, 2016 ... ... were later convergently evolved by post-Triassic dinosaurs. As one ... Triassic Period and post-Triassic archosaurs demonstrates the ... Nov 10, 2021 ... ... Triassic era, creating the conditions in which dinosaurs ... While dinosaurs had emerged in this time period, they were different ...