Is acrocanthosaurus a Spinosaurus?

Is acrocanthosaurus a Spinosaurus?

Acrocanthosaurus may not be as well known as some of its theropod bretheren such as Tyrannosaurus but it was a truly amazing animal. Like most dinosaurs, only one species of the genus is known. An interesting feature on it was its small sail similar to that of Spinosaurus.

Is acrocanthosaurus a real dinosaur?

Acrocanthosaurus (/ˌækroʊˌkænθəˈsɔːrəs/ ak-ro-KAN-thə-SAWR-əs; meaning “high-spined lizard”) is a genus of carcharodontosaurid dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous.

When did the acrocanthosaurus go extinct?

The last definite members of the allosaurs, the Carcharodontosauridae, went extinct around 90 million years ago, during the Late Cretaceous Period [3]. It was only after the decline of allosaurs that tyrannosaurs managed to evolve larger size and came to be the dominant land predators of their environment.

Is Acrocanthosaurus bigger than T Rex?

Acrocanthosaurus Was Almost the Size of T. Rex and Spinosaurus. The fact is that at 35 feet long and five or six tons, Acrocanthosaurus was the fourth-biggest meat-eating dinosaur of the Mesozoic Era, after Spinosaurus, Giganotosaurus and Tyrannosaurus Rex (to all of which it was distantly related).

How old is Acrocanthosaurus?

about 110-130 million years ago
Acrocanthosaurus(high spined lizard) was a large theropod from North America. It was the second biggest theropod from the continent, after Tyrannosaurus and ahead of Siats. Acrocanthosaurus lived about 110-130 million years ago and was the top predator.

Is acrocanthosaurus bigger than T Rex?

Is the Giganotosaurus the biggest dinosaur?

Giganotosaurus was one of the largest meat-eating dinosaurs. For a long time, Tyrannosaurus rex — “king of the dinosaurs” — was thought to be the largest carnivorous dinosaur. Today, Giganotosaurus is believed to have been slightly larger than T.

What kind of dinosaur was the Cryolophosaurus?

Cryolophosaurus was first excavated from Antarctica’s Early Jurassic, Sinemurian to Pliensbachian aged Hanson Formation, formerly the upper Falla Formation, by paleontologist Dr. William Hammer in 1991. It was the first carnivorous dinosaur to be discovered in Antarctica and the first non-avian dinosaur from the continent to be officially named.

Why was Antarctica not a hotbed of dinosaur discovery?

As you can imagine, the continent of Antarctica isn’t exactly a hotbed of fossil discovery–not because it was bereft of dinosaurs during the Mesozoic Era, but because climatic conditions make long-scale expeditions nearly impossible.

Where did the name Cryolophosaurus ellioti come from?

The name Cryolophosaurus ellioti is derived from the Greek words κρυος (meaning ‘cold’ or ‘frozen’, in reference to its discovery in Antarctica), λοφος (meaning ‘crest’) and σαυρος (meaning ‘lizard’), thus “cold crest lizard”.

Where did the crest of the Monolophosaurus come from?

The crest is an extension of the skull bones, near the tear ducts, fused on either side to orbital horns which rise from the eye sockets. While other theropods like the Monolophosaurus have crests, they usually run along the skull instead of across it.