An analysis of the sloth family tree suggests three different groups of the animals evolved to gigantic sizes in response to ...

Most of us are familiar with sloths, the bear-like animals that hang from trees, live life in the slow lane, take a month to ...

Written with clarity and wit by two top scientists, North American Tree Squirrels illuminates the everyday lives of gray and ...

Sensory features on the armored exoskeletons of ancient fish may be the reason why humans have teeth that are sensitive to ...

For the first time, scientists have created a comprehensive evolutionary tree of all known bird species, synthesizing data ...

Fossil discovery pushes the history of Australian tree frogs back 55 million years, reshaping our understanding of their ...

This data is now part of the Open Tree of Life (OpenTree) project—a collaboration between evolutionary biologists and ...

Fossil tracks found in Australia push the origin of reptiles back by 40 million years, altering the timeline of tetrapod ...

In 2015, a genetic study in the journal Nature suggested that the hoatzin is the last surviving member of a bird line that branched off the evolutionary tree in its own direction 64 million years ...

Crucially, similar techniques used to construct this evolutionary tree can be applied to other groups of species as well, slowly revealing the incredible and inter-related animal diversity that ...

This evolutionary tree shows Metazoa, the group that includes most animals, along with four unicellular cousins and the Holomycota, which includes fungi, as an outgroup for comparison. CREDIT ...

Animals could keep one copy for fundamental ... occurred constantly throughout the bilaterian evolutionary tree. "Our genes are like a vast library of recipes that can be cooked up differently ...