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Alioramus

Restoration of a feathered Velociraptor, a small dromaeosaurid predator
Photo: Bazonka, CC BY-SA 3.0, via Wikimedia Commons
Pronunciation
ah-lee-o-RAH-mus
Name means
Other Branch
Diet
Carnivore
Posture
Bipedal
Period
Late Cretaceous
Length
20 feet (6.1 meters)
Height
11 feet (3.4 meters)
Weight
1,500 lbs (680 kg)

Order: Saurischia · Suborder: Theropoda · Infraorder: Tetanurae · Family: Tyrannosauridae

Alioramus had a longer head and smaller and more numerous teeth than other tyrannosaurids. It was small and slender and it possessed six small horns on its long snout, two side by side and four in a single row ahead of them. Too small for defensive purposes, these horns may have been secondary sexual characteristics, identifying males and females. Fossils of this dinosaur were found in Mongolia.

Mounted skeleton of Giganotosaurus, a giant carnivorous dinosaur
Photo: Rjcastillo, CC BY-SA 4.0, via Wikimedia Commons

More Cretaceous-period dinosaurs →

Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.

Frequently asked questions

What does Alioramus mean?

The name Alioramus means “Other Branch”. It is pronounced ah-lee-o-RAH-mus.

When did Alioramus live?

Alioramus lived during the Late Cretaceous.

Was Alioramus a carnivore or a herbivore?

Alioramus was a carnivore.

How big was Alioramus?

Alioramus was about 20 feet (6.1 meters) long, around 11 feet (3.4 meters) tall, weighing up to 1,500 lbs (680 kg).

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Other dinosaurs from the Tyrannosauridae family.

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