A new hypothesis of dinosaur relationships and early dinosaur evolution ...
2017年3月23日 · By the Carnian stage of the Late Triassic (around 230 million years ago (Ma)), dinosaurs had diversified into three major lineages, Ornithischia, Sauropodomorpha and Theropoda, and, by the Norian...
Untangling the dinosaur family tree - Nature
2017年11月2日 · Our rescored dataset produced a strict consensus tree (Fig. 1), showing the traditional arrangement of the three major dinosaur groups: sauropodomorphs and theropods united as Saurischia, with...
The phylogeny and evolutionary history of tyrannosauroid dinosaurs …
2016年2月2日 · Tyrannosauroids—the group of carnivores including Tyrannosaurs rex —are some of the most familiar dinosaurs of all. A surge of recent discoveries has helped clarify some aspects of their ...
Dinosaur - Wikipedia
Dinosaur evolution after the Triassic followed changes in vegetation and the location of continents. In the Late Triassic and Early Jurassic, the continents were connected as the single landmass Pangaea, and there was a worldwide dinosaur fauna mostly composed of coelophysoid carnivores and early sauropodomorph herbivores. [121]
Dinosaur family tree radically rearranged - Natural History …
2017年3月22日 · Scientists have proposed a significant reorganisation of the dinosaur family tree, with major implications for our understanding of dinosaur origins and evolution. The collaborative study between the Museum and Cambridge University regroups the familiar lineages of dinosaurs that have been established for 130 years.
New study shakes the roots of the dinosaur family tree
2017年3月22日 · This new analysis of dinosaurs and their near relatives, published today in the journal Nature, concludes that the ornithischians need to be grouped with the theropods, to the exclusion of the sauropodomorphs. It has long been known that birds (with their obviously ‘bird-like’ hips) evolved from theropod dinosaurs (with their lizard-like hips).
Anatomy analysis suggests new dinosaur family tree - Science News
2017年3月22日 · The standard dinosaur family tree may soon be just a relic. After examining more than 400 anatomical traits, scientists have proposed a radical reshuffling of the major dinosaur groups.
Evolution: Uprooting the Dinosaur Family Tree - ScienceDirect
2017年5月22日 · A provocative new study rearranges the base of the dinosaur evolutionary tree, upending 130 years of consensus. Does it hold up to scrutiny? Previous article in issue
Study sheds light on the evolution of the earliest dinosaurs
2020年7月29日 · The classic dinosaur family tree has two subdivisions of early dinosaurs at its base: the Ornithischians, or bird-hipped dinosaurs, which include the later Triceratops and Stegosaurus; and the Saurischians, or lizard-hipped dinosaurs, such as …
Dinosaur classification - Wikipedia
Michael Benton classifies all dinosaurs within the Series Amniota, Class Sauropsida, Subclass Diapsida, Infraclass Archosauromorpha, Division Archosauria, Subdivision Avemetatarsalia, Infradivision Ornithodira, and Superorder Dinosauria.