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Last updated on April 18, 2014 at 15:51 EDT

Latest Caviomorpha Stories

Researchers Discover 41 Million Old Rodent Fossils
2011-10-12 11:51:13

Researchers have discovered the oldest rodent fossils yet along the Ucayali River near Contamana, Peru. The fossils are comprised of the tiny teeth of a mouse-and rat-sized animal that lived at least 41 million years ago. These fossils are about 10 million years older than all previous rodent discoveries made. "This really pushes back the date of the first South American rodents," said Darin Croft, an anatomy professor at Case Western Reserve University School of Medicine, Cleveland,...


Latest Caviomorpha Reference Libraries

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2006-12-14 14:20:47

The spiny rats are a group of hystricognath rodents in the family Echimyidae. They are distributed from Central America through much of South America. They were also found in the West Indies until the 1800s. Some authorities consider the nutria from southern and central South America to be a part of this family. Characteristics Most spiny rats resemble spined rats. They are more closely related to guinea pigs and chinchillas. Most species have stiff pointed hairs that allow for...

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