Maybe that black cat that crossed your path wasn’t so bad after all. For the dinosaurs, an extinction-causing asteroid derailed what seemed to be a pretty good run. “It’s all just bad luck,” said New ...

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 ...

An abrupt episode of global warming and major changes in plant and animal life marked the transition between the Paleocene and Eocene epochs about 55 million years ago. Several groups of mammals, ...

A new look at a fossil mammal with powerful front legs for digging is clearing up questions about the origin of a group of strange and scaly modern-day creatures called pangolins. First excavated in ...

New Haven, Conn. — For more than 140 years, Mixodectes pungens, a species of small mammal that inhabited western North America in the early Paleocene, was a mystery. What little was known about them ...

Resolving the timing and pattern of early placental mammal evolution has been confounded by conflict among divergence date estimates from interpretation of the fossil record and frommolecular-clock ...

Of all the mysteries surrounding dinosaurs, none has sparked more debate than how their era ended—was it a gradual decline or ...

BIG BEND NATIONAL PARK, Texas — Paleontologists have found fossilized remains of a giant possum-like mammal that lived 60 million years ago. The fossils, found at Big Bend National Park in Texas, ...

Paleontologists uncovered another rare fossil in Texas. This time, it's a 60-million-year-old fossil of a giant possum-like mammal that is reported to be the largest marsupial found in the North ...