“A 62-million-year-old skeleton of this quality and completeness offers novel insights into mixodectids, including a much clearer picture of their evolutionary relationships,” study co-author and Yale ...

If textbooks ever made you believe mammals like humans, cats, and kangaroos first evolved somewhere up north, think again. A remarkable discovery from Australia has flipped our understanding of mammal ...

A new genome-based study suggests that ancient sharks like frilled and cow sharks could sit outside the family tree that ...

Phylogenomic analysis of placental mammals harnesses whole-genome data, rare genomic markers and advanced statistical models to reconstruct the evolutionary history and timing of diversification ...

A monkey descending a tree trunk often keeps its head up, moving almost like a cautious climber backing down a ladder. Squirrels and many other mammals, by contrast, tend to go headfirst. That ...

Seventy-three million years ago, in Alaska's dark and frozen landscape, a group of small, rodent-like creatures was quietly ...

Humankind’s common ancestor with other mammals may have been a roughly ratsize animal that weighed no more than a half a pound, had a long furry tail and lived on insects. In a six-year study of the ...

From the formation of inner ear bones to the rise of hair to cover our bodies, these developments made us distinct from other animals Riley Black | Science Correspondent By examining the fossils of ...