Synapsida

Rhesus monkeys have entirely normal stomachs The word "monkey" entered the English language relatively late, in the 16th century. ...

Tate's woolly mouse-opossum, a marmosin species When most people think of marsupials, it's likely that Australia is the first place ...

One of the key defining features of mammals is that they have hair, or are at least descended from other animals that once had hair. The pri...

Many of the cloven-hoofed mammals are herd animals, living in large groups that typically have dominance hierarchies and other relatively co...

Lesmesodon , a weasel-sized hyenadont. A new species from Early Eocene France was   described this year And so another year approaches its ...

Borhyaena At the dawn of the Miocene, South America had been an island continent for many millions of years, allowing many strange forms of ...

Well over 6,000 species of mammal have currently been described, many of which have only been confirmed as distinct species in the last few ...