According to a new study, the first louse to take up residence on a mammalian host likely started out as a parasite of birds. That host-jumping event tens of millions of years ago began the long ...

Monotremes are a class of mammals that are known as egg laying mammals; they are a special group of mammals that lactate to ...

A new study reveals the surprisingly convergent evolution in the inner ear of mammals. An international research team showed that a group of highly divergent mammals known as Afrotheria and distantly ...

Mammals, including humans, stand out with their distinctively upright posture, a key trait that fueled their spectacular evolutionary success. Yet, the earliest known ancestors of modern mammals more ...

Kristofer M. Helgen is affiliated with the Bernice Pauahi Bishop Museum, Honolulu, Hawaii. Erik Meijaard and Tim Flannery do not work for, consult, own shares in or receive funding from any company or ...

Mammals are not especially diverse. Roughly 6,800 mammal species are known to exist, compared with about 8,800 species of amphibian, 11,000 species of bird and 12,500 of reptile. Yet when most people ...

Illustration showing Repenomamus robustus as it attacks Psittacosaurus lujiatunensis moments before a volcanic debris flow buries them both, ca. 125 million years ago. (Michael Skrepnick via ...

Over the long and complicated course of evolutionary history, mammals independently turned towards water to make a home ...