The three-dimensional shape of a protein can be used to resolve deep, ancient evolutionary relationships in the tree of life, ...

"It's been a complete upheaval, says Mark Springer, an evolutionary geneticist at the University of California, Riverside. "We've come up with a very different family tree for mammals." Many ...

Twins are pretty rare, accounting for just 3% of births in the U.S. these days. But new research shows that for primates 60 ...

The origin of mammals is shrouded in mystery, but every fossil clue helps rewrite the story. A new discovery on a Mediterranean island is challenging what we know about when—and where—mammal ancestors ...

The discovery of two ancient fossils shows early mollusks were more complex and diverse than previously thought. Researchers ...

In a new article published in Frontiers in Bioinformatics, biologists Dr. Jack M Craig, Dr. Blair Hedges, and Dr. Sudhir Kumar, all at Temple University, have built an evolutionary tree that ...

"This is unusual and tells us a lot about how mammals' evolution took place.” Small mammals living today have much shorter lifespans, some surviving for as little as 12 months, and maturing ...

The short-beaked echidna (Tachyglossus aculeatus)  is one of Australia’s most iconic animals. Belonging to a unique group of ...

A recent study has uncovered the surprising evolutionary origin of the mammalian outer ear, linking it to the gills of ancient fish and marine invertebrates. The research reveals that both structures ...