How did the development of a more efficient circulatory system potentially support the active lifestyle of early dinosaurs?

What were previously uneconomic resources in thin "pay zones" of buried Triassic Period sediments became more valuable after the 1990, with development of ... Tyrannosaurus rex lived during the Late Cretaceous Period, about 72 million years ago. Stegosaurus was extinct for 66 million years before Tyrannosaurus walked ... ... were almost completely gone and the dinosaurs began their 135 million-year domination on our planet. “Stiff Competition: For much of the Triassic period ... A specialized group of archosaurs, called dinosaurs, first appeared in the Late Triassic but did not become dominant until the succeeding Jurassic Period. Feb 9, 2002 ... The Triassic dinosaurs wore much smaller than those living in the successive periods of the Mesozoic. They were mostly slender and few reached a ... These incredible creatures dominated the planet through three major geological periods: the Triassic, Jurassic, and Cretaceous periods. Early dinosaurs in the ... The first dinosaurs, prosauropods, early ornithopods, small predators like Eoraptor and Herrerasaurus appeared. · The mammal-like reptiles were declining. · The ... Sep 22, 2022 ... ... dinosaurs were in fact lizard-hipped. The results are reported in the ... periods/Mesozoic era/Triassic period; /Physical sciences/Earth ... 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 ... ... lived, separated into the three distinct periods of the Age of Dinosaurs: Triassic, Jurassic, and Cretaceous. And museum scientists make good use of the ...