The possibility of a quadrupedal Spinosaurus was revived by a 2014 paper by Ibrahim and colleagues that described new material of the animal. The paper found that the hind limbs of Spinosaurus were much shorter than previously believed, and that its center of mass was located in the midpoint of the torso region, as opposed to near the hip as in ...

Spinosaurus aegyptiacus: Bipedal or Quadrupedal? Spinosaurus was the largest theropod to ever walk on the earth, discovered in 1912 for the first time, it has been nominated to be larger than the mighty Tyrannosaurus rex.

2024年11月15日 · This depiction also existed well into the first decade of the twenty-first century despite new discoveries proving otherwise.‭ ‬While usually depicted as a bipedal predator,‭ this version of ‬Spinosaurus has also been envisioned as a …

2023年3月3日 · In the 1970's, Spinosaurus was shown as being quadrupedal (Glut, 2001, p. 82). Heck, it looked like Dimetrodon. Some scientists thought that it was quadrupedal with a bison-humped sail (Hecht, 1996, para. 1) (Black, 2011).

By 2014, xome scientists believed that Spinosaurus aegyptiacus was quadrupedal because it is front-heavy. But later reaserch suggests it could walk bipedally. Spinosaurus was longer than Tyrannosaurus.

2016年1月6日 · This study provides the first convincing evidence of two spinosaurine taxa in the Cenomanian of North Africa based on cranial material, casting doubt on the recent reconstruction of a quadrupedal Spinosaurus which may be based on individuals belonging to two different species of Spinosaurinae.

2020年6月9日 · Two separate, popular reconstructions of Spinosaurus then began to appear—one bipedal, the other quadrupedal. The former would win out (for a short while) after the discovery of Baryonyx in 1986.

2025年1月16日 · Spinosaurus, genus of theropod dinosaurs belonging to the family Spinosauridae, known from incomplete North African fossils that date to Cenomanian times (roughly 100 to 94 million years ago). Spinosaurus, or “spined reptile,” was named for its “sail back” feature, created by tall vertebral spines.

2020年4月29日 · A major find by Nizar Ibrahim added new pieces to the skeleton, cementing theories that Spinosaurus was primarily quadrupedal and had a large dorsal sail and a more crocodilian skull, with...

Decades before Spinosaurus’ discovery, scientists described fossils of Dimetrodon, Edaphosaurus, and the amphibian Platyhystrix, each of which bears a prominent sail on its back, and each of which is an obligate quadruped—an animal which …