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Plants & CreaturesGreekEnglish

Allosaurus

/ˌæləˈsɔːrəs/noun

A large two-legged predatory dinosaur of the Late Jurassic.

The Greek roots

ἄλλος
állos
other, different
+
σαῦρος
saûros
lizard

Literally: different lizard

The story of the word

Marsh named it in 1877 for its backbone, which was not built like the vertebrae he knew: the centra were hollowed out and much lighter. It became the best-known big predator of the Jurassic largely because one quarry in Utah gave up thousands of its bones, many of them from animals that had died stuck in mud. The ἄλλος in the name is the same 'other' inside allergy, a reaction other than the expected one, and allegory, saying one thing in public and meaning another.

How it travelled
Ancient Greek → scientific coinage → English
First recorded
1877

Same family

allergyallegoryallotropedinosaur

In a sentence

Allosaurus skulls flex at the joints, which suggests a bite that worked more like a hatchet than a crush.

Built on the same root

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