World Library  
Flag as Inappropriate
Email this Article

Hominins

Article Id: WHEBN0003381622
Reproduction Date:

Title: Hominins  
Author: World Heritage Encyclopedia
Language: English
Subject: Nut (fruit), Oldowan
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Hominins

Not to be confused with Hominoidea, Hominidae, Homininae, or Hominina.
Hominins
Temporal range: 5.4–0Ma
Error creating thumbnail: Invalid thumbnail parameters or image file with more than 12.5 million pixels
Skull of Sahelanthropus tchadensis, considered by some researchers[according to whom?] to be the earliest fossil hominin.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Hominidae
Subfamily: Homininae
Tribe: Hominini
Gray, 1825
Genera

Subtribe Australopithecina

Subtribe Hominina



Hominini is the tribe of Homininae that comprises Homo, and other members of the human clade after the split from the tribe Panini (chimpanzees).[1][2] Members of the tribe are called hominins (cf Hominidae, "hominids"). The subtribe Hominina is the "human" branch, including genus Homo. Researchers proposed the taxon Hominini on the basis of the idea that the least similar species of a trichotomy should be separated from the other two. Some earlier classification schemes include the genus Pan (chimpanzees) within the Hominini, but this classification is now rarely followed. Sahelanthropus tchadensis is an extinct hominid species that lived 7 million years ago, very close to the time of the chimpanzee / human divergence; it is thus unclear whether it can be considered a member of the Hominini tribe.

Through DNA comparison, scientists believe the Pan / Homo divergence occurred between 5.4 and 6.3 million years ago, after an unusual process of speciation that ranged over 4 million years.[3] Few fossil specimens on the Pan side of the split have been found, the first fossil chimpanzee discovery being published in 2005,[4] dating to between 545 ± 3 kyr (thousand years) and 284 ± 12 kyr via Argon-argon dating, from Kenya's East African Rift Valley. All of the extinct genera listed in the table to the right are ancestral to Homo, or are offshoots of such. However, both Orrorin and Sahelanthropus existed around the time of the split, and so may be ancestral to all three extant species.

In the proposal of Mann and Weiss (1996),[5] the tribe Hominini includes Pan as well as Homo, but within separate subtribes. Homo (and, by inference, all bipedal apes) is in the subtribe Hominina, while Pan is in the subtribe Panina. Wood (2010) discusses the different views of this taxonomy.[6]

See also

References

Primates portal
Anthropology portal
Evolution portal
Science portal
sv:Hominider/homininer
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.