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Tanycolagreus (North American Museum of Ancient Life)


Tanycolagreus (Greek for "elongated limbs"); pronounced TAN-ee-coe-LAG-ree-us


Woodlands of North America

Historical Period:

Late Jurassic (150 million years ago)

Size and Weight:

About 13 feet long and a few hundred pounds



Distinguishing Characteristics:

Long, narrow snout; slender build


About Tanycolagreus:

For a decade after its partial remains were discovered in 1995, in Wyoming, Tanycolagreus was thought to be a specimen of another slender carnivore, Coelurus. Further study of its distinctive-looking skull caused it be assigned to its own genus, but Tanycolagreus still remains grouped among the many slender, early theropods that preyed on the small carnivorous and herbivorous dinosaurs of the late Jurassic period.

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