Colorado dinosaur discovery – Camarasaurus

Camarasaurus skeleton
A Camarasaurus skeleton from the late Jurassic period, found most often in the Western United States, is on display at the Jurassic Museum of Asturias in Spain. | Photo by Mario Modesto /


Vertebrae from the Camarasaurus, a gigantic, plant-eating dinosaur, were found in 1877 by Fremont County Schools Superintendent O.W. Lucas in Garden Park six miles north of Cañon City.

Paleontologist Edward Cope of the Academy of Natural Sciences in Philadelphia named it in 1877.

The largest Camarasaurus reached 75 feet long and weighed 52 tons. The dinosaur stood on four feet, with a long neck, small skull and long tail, and likely ate cruder plant material than the Apatosaurus, using strong teeth that were 7 1/2 inches long.

The Camarasaurus was from the late Jurassic period, and it is the giant plant-eater most commonly found in North America.

A Camarasaurus pelvis recovered from Dinosaur National Monument shows gouging marks from an attack by an Allosaurus, a meat-eating predator.