The oldest known fossil of a singing cicada reveals that these insects were making music during the Eocene epoch — long before humans existed. “The fossil has been in the collection of the Senckenberg ...

The evolutionary journey from primitive plesiadapiforms to early primates during the Paleocene and Eocene epochs represents a critical chapter in mammalian history. Fossil records from these periods ...

It may have been the smart evolutionary strategy during a chaotic chapter of Earth’s history, but it didn’t last. By Jack Tamisiea Mammals are the brainiacs of the animal world. The brain of the sperm ...

At the end of the Paleocene and beginning of the Eocene epochs, between 59 to 51 million years ago, Earth experienced dramatic warming periods, both gradual periods stretching millions of years and ...

A 49-foot prehistoric snake, Vasuki indicus, has been discovered in India, rewriting our understanding of ancient reptiles. Living around 47 million years ago, this colossal constrictor was longer ...

Amazing ‘Nesting Doll’ Fossil Reveals Bug in Lizard in Snake Amazing ‘Nesting Doll’ Fossil Reveals Bug in Lizard in Snake Amazing ‘Nesting Doll’ Fossil Reveals Bug in Lizard in Snake Eocene Big Bird ...