Smaller primates expend no more energy climbing trees than they do walking, a finding that might help explain why some of the earliest ancestors to humans and apes took to the trees, said a group of U ...

Researchers led by Mary T. Silcox used a CT-scan to study the 1.5-inch skull of a primate known as Ignacius graybullianus. With that result they were able to model the brain structure of the animal ...

New Haven, Conn. -- The origins and earliest branches of primate evolution are clearer and more ancient by 10 million years than previous studies estimated, according to a study featured on the cover ...

WASHINGTON — One of the earliest primates lived in trees and relied more on smell than vision, a new study indicates. A tiny cousin of the earliest ancestors of humans lived 54 million years ago in ...

They range in size from the tiny Madame Berthe's mouse lemur, weighing little more than an ounce, to the 440lb mountain gorilla. And the primate species, of course, incorporates humans, once famously ...

The note cards and images document trees and primates observed by Suzanne Ripley during 1966 - 1971. Images are organized by plant and primate, then by binomial. Each binomial includes a series of ...