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HomeDinosaurs › Alxasaurus

Alxasaurus

Mounted Stegosaurus skeleton with rows of back plates and tail spikes
Gary Todd from Xinzheng, China, public domain, via Wikimedia Commons
Pronunciation
AL-shuh-SAWR-us
Name means
Alxa
Diet
Herbivore
Posture
Bipedal
Period
Early-Late Cretaceous
Length
13 feet (4 meters)
Height
5.75 feet (1.75 meters)

Order: Saurischia · Suborder: Theropoda · Infraorder: Therizinosauroidea · Family: Alxasaururidae

This unusual dinosaur is the earliest known Segnosaur. It is characterized by its large arms and claws. It closely resembled Erlikosaurus in structure; one of the more notable anatomical differences being a greater number of teeth possessed by Alxasaurus vs. 31 in Erlikosaurus. While it had a toothlessbeak, these tiny, leaf-shaped teeth were placed further back in the mouth and are usually interpreted as being those of a herbivore.

Mounted Tyrannosaurus rex skeleton on display in a museum hall
Gary Todd, public domain, 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 Alxasaurus mean?

The name Alxasaurus means “Alxa”. It is pronounced AL-shuh-SAWR-us.

When did Alxasaurus live?

Alxasaurus lived during the Early-Late Cretaceous.

Was Alxasaurus a carnivore or a herbivore?

Alxasaurus was a herbivore.

How big was Alxasaurus?

Alxasaurus was about 13 feet (4 meters) long, around 5.75 feet (1.75 meters) tall.

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Dinosaur quick-reference sheet

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