"South American and Old World monkeys are descended from a common
ancestor. ... Tarling (1980) assumes that falling sea levels in the early Oligocene
exposed a number of stepping-stone islands. ... ALTERNATIVE APPROACHES
Arboreal Hypothesis The arboreal hypothesis of primate origins Early Primate
Evolution ..."
In Search of Ourselves(3rd Edition) An Introduction to Physical Anthropology by Frank E. Poirier Paperback, 524 Pages, Published 1981 by Burgess ISBN-13: 978-0-8087-1666-2, ISBN: 0-8087-1666-2
In Search of Ourselves(2nd Edition) An Introduction to Physical Anthropology by Frank E. Poirier Paperback, 478 Pages, Published 1977 by Burgess Pub. Co ISBN-13: 978-0-8087-1657-0, ISBN: 0-8087-1657-3
In search of ourselves;(Reprint) An introduction to physical anthropology, by Frank E. Poirier Paperback, 400 Pages, Published 1974 by Burgess Pub. Co ISBN-13: 978-0-8087-1638-9, ISBN: 0-8087-1638-7