In The Story of Evolution in 25 Discoveries, Donald R. Prothero explores the most fascinating bre...

In this lively and entertaining book, Donald R. Prothero explores the astonishing connections bet...

An essential reference for all researchers working on the evolution of North American mammals.

During the transition from the Eocene to the Oligocene epochs, the mild tropical climates of the ...

UFOs. Aliens. Strange crop circles. Giant figures scratched in the desert surface along the coast...

The family Rhinocerotidae has a long and amazing history in North America. From their first appea...

The transition from the Eocene to the Oligocene epochs, from approximately 47 to 27 million years...

The transition from the Eocene to the Oligocene epochs was the most significant event in earth hi...

The transition from the Eocene to the Oligocene epochs was the most significant event in earth hi...

Ammonites are an extinct and charismatic lineage that persisted for over 300 million years. They ...

Ammonites are an extinct and charismatic lineage that persisted for over 300 million years. They ...

Nothing fills us with a sense of wonder like fossils. What looks at first like a simple rock is i...