The "top predator" from the Jurassic is relatively small: Megacauda sungei measures just half a meter (1.6 feet) from its nose to the tip of its tail. The furry ancestor of today's mammals hunted its ...

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In 2014, members of a local museum found fragments of an ancient fossil dating to the end of the Pliocene or early Pleistocene epoch in a seaside cliff on the Argentine pampas. They belonged to a ...

In a characteristic episode of To Catch a Predator, a gray-haired man in his 40s walks into a suburban house in Florida. He's there to meet a 15-year-old named Jolanda who he's been chatting with ...

A 165-million-year-old fossil has revealed an extraordinary Jurassic predator that may help explain how mammals developed one of their most important evolutionary advantages. Although only 20 inches ...