English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  The upper limb of Paranthropus boisei from Ileret, Kenya

Richmond, B. G., Green, D., Lague, M., Chirchir, H., Behrensmeyer, A., Bobe, R., et al. (2020). The upper limb of Paranthropus boisei from Ileret, Kenya. Journal of Human Evolution, 141: 102727. doi:10.1016/j.jhevol.2019.102727.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0006-4E66-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-7253-B
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Richmond, Brian G.1, Author              
Green, D.J., Author
Lague, M.R., Author
Chirchir, H., Author
Behrensmeyer, A.K., Author
Bobe, R., Author
Bamford, M.K., Author
Griffin, N.L., Author
Gunz, Philipp1, Author              
Mbua, E., Author
Merritt, S.R., Author
Pobiner, B., Author
Kiura, P., Author
Kibunjia, M., Author
Harris, J.W.K., Author
Braun, D.R., Author
Affiliations:
1Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Max Planck Society, ou_1497673              

Content

show
hide
Free keywords: -
 Abstract: Paranthropus boisei was first described in 1959 based on fossils from the Olduvai Gorge and now includes many fossils from Ethiopia to Malawi. Knowledge about its postcranial anatomy has remained elusive because, until recently, no postcranial remains could be reliably attributed to this taxon. Here, we report the first associated hand and upper limb skeleton (KNM-ER 47000) of P. boisei from 1.51 to 1.53 Ma sediments at Ileret, Kenya. While the fossils show a combination of primitive and derived traits, the overall anatomy is characterized by primitive traits that resemble those found in Australopithecus, including an oblique scapular spine, relatively long and curved ulna, lack of third metacarpal styloid process, gracile thumb metacarpal, and curved manual phalanges. Very thick cortical bone throughout the upper limb shows that P. boisei had great upper limb strength, supporting hypotheses that this species spent time climbing trees, although probably to a lesser extent than earlier australopiths. Hand anatomy shows that P. boisei, like earlier australopiths, was capable of the manual dexterity needed to create and use stone tools, but lacked the robust thumb of Homo erectus, which arguably reflects adaptations to the intensification of precision grips and tool use. KNM-ER 47000 provides conclusive evidence that early Pleistocene hominins diverged in postcranial and craniodental anatomy, supporting hypotheses of competitive displacement among these contemporaneous hominins.

Details

show
hide
Language(s): eng - English
 Dates: 2020-02-172020-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.jhevol.2019.102727
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Human Evolution
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Elsevier
Pages: - Volume / Issue: 141 Sequence Number: 102727 Start / End Page: - Identifier: ISSN: 0047-2484