Arboreal quadrupedal primates supinate their hands and feet toward the curve of the support ... All leapers have long femora, but it is the anatomy of the knee, with its tall antero-posterior ...

Only a small fraction of the primates that have ever lived has been ... photographs or they might visit by airplane, automobile or foot to determine if those rocks are exposed and accessible ...

During the early Paleocene, about 66 to 56 million years ago, a species of small mammal known as Mixodectes pungens […] ...