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International Beaver Day

Kelly Lubbers, Bonebed Paleontologist Happy International Beaver Day!! Beavers have been around for a long time (since the late Eocene, about 33 million years ago) and were not all semi-aquatic, tree chewing, dam building like the beavers we see and love today.  Some...

A Bone Voyage

By Greg McDonald “I have been wonderfully lucky, with fossil bones — some of the animals must have been of great dimensions: I am almost sure that many of them are quite new; this is always pleasant, but with the antediluvian animals it is doubly so.” —Letter from...

Botany and Bones in Brazil

By Greg McDonald The first discoveries of the ground sloths Megatherium and Megalonyx consisted of single individuals that were not mixed with other species. Such discoveries make it easier to be confident that all of the bones are of a single species and that the...

The American Pronghorn and its Ancient Relatives

Richard S. White, Research Associate Antilocapra Americana (Walt Anderson painting) When Europeans began exploring the New World in the 16th-19th centuries, they encountered a wealth of unfamiliar animals and plants. They generally called these animals by some version...

Saltpeter and Sloths

It was not long after Cuvier described the first fossil sloth, Megatherium, in 1796 that additional discoveries of fossil sloths were made. The next prominent discovery was not in South America as might be expected but instead in North America. The discovery of this...