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

and yet there is no comprehensive molecular phylogenetic hypothesis of primate evolutionary history that summarizes the pattern and timing of all primate relationships. Such a phylogenetic tree would ...

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

Twins are pretty rare, accounting for just 3% of births in the US these days. But new research shows that for primates 60 million years ago, giving birth to twins was the norm.

“These patterns of stone selection parallel what is documented for Oldowan hominins,” the researchers noted.

Jack M Craig, Dr. Blair Hedges, and Dr. Sudhir Kumar, all at Temple University, have built an evolutionary tree that encompasses 455 primates, every species for which genetic data are available.

Throughout human history, twins have been rare, which often makes them seem extraordinary. Across various cultures, twins are ...

A recent study finds that twins were the norm 60 million years ago until we needed more room to grow bigger bodies and brains ...

Despite the fact that almost all primates today, including people, usually give birth to just one baby ... the history of litter size is to map the known litter size of as many species as possible ...

As members of the exclusive primate family, we humans know just how special ... shoulder joints designed to help them swing through trees. You won’t know from just looking at them, but great ...