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Plants & CreaturesGreekEnglish

Theropod

/ˈθɛrəpɑd/noun

A member of the mostly meat-eating dinosaur group that walks on two legs and includes birds.

The Greek roots

θήρ
thḗr
wild beast
+
πούς
poús
foot

Literally: beast foot

The story of the word

Marsh named Theropoda in 1881, choosing beast-footed because he thought the clawed feet resembled a mammal predator's. The irony arrived a century later: theropod feet are the most birdlike thing about them, birds are living theropods, and the sparrow on the windowsill has a better claim to the group than any beast. θήρ also gives therapsid and the pharmacological sense in theriac, an antidote against the bite of wild animals.

How it travelled
Ancient Greek → scientific coinage → English
First recorded
1880s

Same family

sauropodornithopodtherapsidtreacle

In a sentence

Every theropod fossil with skin impressions now seems to show feathers of some kind.

The trackway records a theropod running, not walking.

Built on the same root

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