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Chirostenotes

By , About.com Guide

Chirostenotes (Wikimedia Commons)

Name:

Chirostenotes (Greek for "narrow hand"); pronounced KIE-ro-STEN-oh-tease

Habitat:

Woodlands of North America

Historical Period:

Late Cretaceous (80 million years ago)

Size and Weight:

About 9 feet long and 100 pounds

Diet:

Probably omnivorous

Distinguishing Characteristics:

Narrow, clawed fingers on hands; toothless jaws

About Chirostenotes:

Like Frankenstein's monster, Chirostenotes has been assembled in parts, at least in terms of its nomenclature. Its long, narrow hands were discovered in 1924, prompting its current name; the feet were found a few years later, and assigned the genus Macrophalangia (Greek for "big toes"); and its jaw was unearthed a few years after that, and given the name Caenagnathus ("recent jaw"). Only afterwards was it recognized that all three parts belonged to the same dinosaur, hence the reversion to the original name.

In evolutionary terms, Chirostenotes was closely related to a similar Asian theropod, Oviraptor, showing that these dinosaurs were widespread in the late Cretaceous period. As with all tiny theropods, Chirostenotes is thought to have sported feathers, and it may have been an intermediate link between dinosaurs and birds.

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