Delson, Eric Lehman College and Graduate Center, The City University of New York; Department of Vertebrate Paleontology, American Museum of Natural History, New York, New York.
Last reviewed:February 2020
Show previous versions
- Early primates
- Eocene primates
- Modern lower primates
- New World primates
- Old World monkeys
- Spread of modern ape ancestors
- Human evolution
- Related Primary Literature
- Additional Reading
Extinct members of the order of mammals to which humans belong. All current classifications divide the living primates (order Primates) into two major groups (suborders) [Fig. 1]: the Strepsirhini (Strepsirrhini) or "lower" primates (lemurs, lorises, and bushbabies) and the Haplorhini (Haplorrhini) or "higher" primates [tarsiers and anthropoids (New and Old World monkeys, greater and lesser apes, and humans)]. Some fossil groups (omomyiforms and adapiforms) can be placed with or near these two extant groupings; however, there is contention whether members of the Plesiadapiformes represent the earliest relatives of primates and are best placed within the order (as done here) or outside it. See also: Anthropology; Biological classification; Extinction; Fossil; Mammalia; Phylogeny; Physical anthropology; Primate
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information