Sauropoda - Wikipedia
By the Late Jurassic (150 million years ago), sauropods had become widespread (especially the diplodocids and brachiosaurids). By the Late Cretaceous, one group of sauropods, the titanosaurs, had replaced all others and had a near-global distribution.
Gigantic Herbivores, Long Necks & Unique Limbs - Britannica
2024年10月5日 · Sauropods first evolved in the Early Jurassic Epoch (201 million to 174 million years ago). They became gigantic and highly diverse in the Late Jurassic Epoch (about 164 million to 145 million years ago) and persisted into the Cretaceous Period (145 million to …
Triumph of the Titans: How Sauropods Flourished
2012年5月1日 · Jurassic sauropod bones flowed into museums in such great numbers that it is still possible to find shelves of these fossils in the bowels of their collections, encased in plaster field jackets,...
Sauropodomorph evolution across the Triassic–Jurassic boundary…
2021年11月18日 · Almost all Jurassic sauropodomorph clades stem from ghost lineages that cross the Triassic–Jurassic boundary, indicating that variations after the extinction were more related to changes of...
A new Middle Jurassic diplodocoid suggests an earlier ... - Nature
2018年7月24日 · One current paradigm is that geographic isolation produced an endemic biota in East Asia during the Jurassic, while simultaneously preventing diplodocoid sauropod dinosaurs and several other ...
Brachiosaurus - Wikipedia
Brachiosaurus (/ ˌ b r æ k i ə ˈ s ɔː r ə s /) is a genus of sauropod dinosaur that lived in North America during the Late Jurassic, about 154 to 150 million years ago. [1] It was first described by American paleontologist Elmer S. Riggs in 1903 from fossils found in the Colorado River valley in western Colorado, United States.Riggs named the dinosaur Brachiosaurus altithorax; the ...
Dinosaur - Sauropods, Herbivores, Quadrupeds | Britannica
5 天之前 · No better candidate has been discovered, and the first true sauropods are not found until the Early Jurassic, so the transition between prosauropods and sauropods has been generally accepted. In the 1990s, however, several studies have suggested that prosauropods may be a distinct group that shared common ancestors with sauropods earlier in the ...
Neck Posture and Feeding Habits of Two Jurassic Sauropod …
1999年4月30日 · The abundance, size, and diversity of sauropods suggest that they played a central role in the Morrison and other continental ecosystems of the Jurassic and Cretaceous. The key to understanding the feeding strategies of sauropods lies in …
Lowland–upland migration of sauropod dinosaurs during the Late Jurassic ...
2011年10月26日 · Sauropod dinosaurs were the largest vertebrates ever to walk the Earth, and as mega-herbivores they were important parts of terrestrial ecosystems. In the Late Jurassic-aged Morrison depositional...
Sauropods - ScienceDirect
2023年1月23日 · As recorded by their fossil bones, true sauropods only evolved in the Early Jurassic, after the end-Triassic mass extinction, 201 million years ago. Tracks and trackways from the Late Triassic of Greenland, however, suggest an earlier appearance.