Definitions for allosaurus
al·losaurus

Princeton's WordNetRate this definition:4.0 / 2 votes

1. allosaur, allosaurusnoun

   late Jurassic carnivorous dinosaur; similar to but somewhat smaller than tyrannosaurus

WiktionaryRate this definition:5.0 / 1 vote

1. allosaurusnoun

   a large, carnivorous dinosaur, of genus Allosaurus, that lived in the Jurassic period

WikipediaRate this definition:0.0 / 0 votes

1. Allosaurus

   Allosaurus () is a genus of large carnosaurian theropod dinosaur that lived 155 to 145 million years ago during the Late Jurassic epoch (Kimmeridgian to late Tithonian). The name "Allosaurus" means "different lizard" alluding to its unique (at the time of its discovery) concave vertebrae. It is derived from the Greek ἄλλος (allos) ("different, other") and σαῦρος (sauros) ("lizard / generic reptile"). The first fossil remains that could definitively be ascribed to this genus were described in 1877 by paleontologist Othniel Charles Marsh. As one of the first well-known theropod dinosaurs, it has long attracted attention outside of paleontological circles. Allosaurus was a large bipedal predator. Its skull was light, robust and equipped with dozens of sharp, serrated teeth. It averaged 8.5 meters (28 ft) in length for A. fragilis, with the largest specimens estimated as being 9.7 metres (32 ft) long. Relative to the large and powerful hindlimbs, its three-fingered forelimbs were small, and the body was balanced by a long and heavily muscled tail. It is classified as an allosaurid, a type of carnosaurian theropod dinosaur. The genus has a complicated taxonomy, and includes at least three valid species, the best known of which is A. fragilis. The bulk of Allosaurus remains have come from North America's Morrison Formation, with material also known from Portugal. It was known for over half of the 20th century as Antrodemus, but a study of the abundant remains from the Cleveland-Lloyd Dinosaur Quarry brought the name "Allosaurus" back to prominence and established it as one of the best-known dinosaurs. As the most abundant large predator in the Morrison Formation, Allosaurus was at the top of the food chain, probably preying on contemporaneous large herbivorous dinosaurs, and perhaps other predators. Potential prey included ornithopods, stegosaurids, and sauropods. Some paleontologists interpret Allosaurus as having had cooperative social behavior, and hunting in packs, while others believe individuals may have been aggressive toward each other, and that congregations of this genus are the result of lone individuals feeding on the same carcasses.

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1. allosaurus

   The Allosaurus is a type of carnivorous dinosaur that lived during the late Jurassic period about 150-155 million years ago. It was one of the largest predators of its time, characterized by its large size, a massive skull, serrated teeth, and long, sharp claws. Its name, 'Allosaurus', means 'different lizard', relating to its unique spine compared to other dinosaurs during its discovery.

FreebaseRate this definition:5.0 / 1 vote

1. Allosaurus

   Allosaurus is a genus of large theropod dinosaur that lived 155 to 150 million years ago during the late Jurassic period. The name "Allosaurus" means "different reptile". It is derived from the Greek ἄλλος/allos and σαῦρος/sauros. The first fossil remains that can definitely be ascribed to this genus were described in 1877 by paleontologist Othniel Charles Marsh, and it became known as Antrodemus. As one of the first well-known theropod dinosaurs, it has long attracted attention outside of paleontological circles. Indeed, it has been a top feature in several films and documentaries about prehistoric life. Allosaurus was a large bipedal predator. Its skull was large and equipped with dozens of large, sharp teeth. It averaged 8.5 m in length, though fragmentary remains suggest it could have reached over 12 m. Relative to the large and powerful hindlimbs, its three-fingered forelimbs were small, and the body was balanced by a long and heavily muscled tail. It is classified as an allosaurid, a type of carnosaurian theropod dinosaur. The genus has a complicated taxonomy, and includes an uncertain number of valid species, the best known of which is A. fragilis. The bulk of Allosaurus remains have come from North America's Morrison Formation, with material also known from Portugal and possibly Tanzania. It was known for over half of the 20th century as Antrodemus, but study of the copious remains from the Cleveland-Lloyd Dinosaur Quarry brought the name "Allosaurus" back to prominence, and established it as one of the best-known dinosaurs.

Matched Categories

1. • Theropod Dinosaur

How to pronounce allosaurus?

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How to say allosaurus in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of allosaurus in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of allosaurus in Pythagorean Numerology is: 4

Examples of allosaurus in a Sentence

1. Rupert Werff:

   This is a very exciting but nerve-wracking time for us, the first juvenile allosaurus was just a couple of limb bones and three ribs, so this is by far the most intact specimen.

2. Stephanie Drumheller:

   Allosaurus might not have been as big as T. rex, but it was no slouch as an apex predator, it was able to hyper-extend its jaw for a super-wide gape. It was a hatchet feeder like a hawk, meaning it would chop into prey with its head. It had long arms with grasping claws and a strong bite force. Track sites suggest it might have been a long-distance hunter that would follow herds for miles to pick off prey.

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