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Triceratops - A Huge Extinct Reptile

Triceratops -  A Huge Extinct Reptile.jpg Pariasaurus - An Extinct Vegetarian Triassic ReptileThumbnailsSkeleton of an Extinct Flightless Toothed Bird, HesperornisPariasaurus - An Extinct Vegetarian Triassic ReptileThumbnailsSkeleton of an Extinct Flightless Toothed Bird, HesperornisPariasaurus - An Extinct Vegetarian Triassic ReptileThumbnailsSkeleton of an Extinct Flightless Toothed Bird, Hesperornis

(From remains found in Cretaceous strata of Wyoming, U.S.A.)

This Dinosaur, about the size of a large rhinoceros, had a huge three-horned skull with a remarkable bony collar over the neck. But, as in many other cases, its brain was so small that it could have passed down the spinal canal in which the spinal cord lies. Perhaps this partly accounts for the extinction of giant reptiles.

Author
The Project Gutenberg EBook of The Outline of Science, Vol. 1 (of 4), by J. Arthur Thomson
Published in 1922
Available from gutenberg.org
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