Sometime during the Cretaceous Period, 125 million years ago, a feisty mammal the size of a domestic cat attacked a dinosaur three times its size. CNN values your feedback 1.

A 125-million-year-old fossil from the early Cretaceous shows the skeletons of a smaller mammal biting a larger horned dinosaur, suggesting a much more complex ancient food web.

An inside look at the “Killer Pig from Hell”, Archaeotherium. By Riley Black. March 13, 2010. ... They even have their own YouTube feed with lots of 3D renderings of fossil animals, ...

One of the better-known entelodonts was Archaeotherium, which were common in western North America. These were large animals, several times the size of modern pigs, with the skull reaching near ...

The world’s oldest mammal has been identified using fossil dental records – predating the previously confirmed earliest mammal by about 20 million years – in a new discovery hailed as ...

The small mammal's foot in the fossil of the microraptor. Alex Dececci. When a team of scientists reanalyzed a cat-sized dinosaur fossil discovered more than two decades ago, they realized the ...

That dinosaurs ate the mammals that scurried beneath their feet is not in doubt. Now an extraordinary fossil newly described in Scientific Reports, unearthed by a team led by Gang Han at Hainan ...

A fossil found in 2012 in the Chinese province of Liaoning appeared to show a Psittacosaurus, a plant-eating Triceratops relative, entangled with a Repenomamus, a smaller mammal.

Sometime during the Cretaceous Period, 125 million years ago, a feisty mammal the size of a domestic cat attacked a dinosaur three times its size. CNN values your feedback 1.