Postcranial morphologies of A. sediba

Dublin Core

Title

Postcranial morphologies of A. sediba

Subject

Australopithecus sediba

Description

Image 1 illustrates a reconstruction of MH1 (left) and MH2 (right) in an idealized skeleton of A. africanus

Image 2 illustrates a reconstructed pelvis of MH2. Left side is a mirror image. 

Image 3 illustrates the original skeleton of the A. sediba, holotype MH1, on display at Maropeng, Cradle of Humankind, South Africa.

Creator

Image 2: Peter Schmid, courtesy Lee R. Berger and the University of the Witwatersrand.

Image 3: Wikimedia

Source

Image 1: 
http://science.sciencemag.org/content/328/5975/195.full

Image 2: https://en.wikipedia.org/wiki/Australopithecus_sediba#/media/File:Australopithecus_sediba_MH1_(ausgestellt_in_Maropeng).JPG

Image 3:
https://commons.wikimedia.org/wiki/File:Australopithecus_sediba_MH1_(ausgestellt_in_Maropeng).JPG

Publisher

Science Journal
Wikimedia

Fossil Item Type Metadata

Discoverer(s)

Lee Berger and team

Type Specimen

MH1

Specimen Name/Nickname

Karabo

Location (Country)

Malapa, South Africa

Site (Name)

Cradle of Humankind World Heritage site in the Malapa Cave system

Discovery Date

August 15, 2008

Specimen/Species Time Range

Between 1.977 and 1.98 million years ago

Dating Method

Paleomagnetism, stratigraphic analysis, and uranium-lead dating

Specimen Data (Morphology)

The morphological features on the joints of both femora and tibiƦ as well as the upper and lower limbs are similar to specimens of A. africanus. Nonetheless, many derived pelvic features are more modern. A portion of the hip has a pronounced crescent-shape characteristic known as acetabulocristal buttress, a feature unrelated to Australopithecus. Other australopiths have a rather nonvertically-oriented broad shape and less pronounced acetabulocristal buttress (iliac blades). The acetabulum is large, a trait presented in australopiths. Additionally, the midsection or shaft of each long bone shares a ratio range most attributable to genus Homo. MH1 possessed more primitive ankle and foot features like a heel unlikely to endure long periods of running. The ankle bone is relatively flat when compared to derived Homo traits, yet the human-like arch and pronounced heel are traits shared with bipeds. 

Files

F2.large.jpg
162px-Pelvis_MH2_Australopithecus_sediba.jpg
220px-Australopithecus_sediba_MH1_(ausgestellt_in_Maropeng).JPG
Date Added
April 25, 2017
Item Type
Fossil
Tags
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Citation
Image 2: Peter Schmid, courtesy Lee R. Berger and the University of the Witwatersrand.Image 3: Wikimedia, “Postcranial morphologies of A. sediba,” Hominid Fossil Repository, accessed April 19, 2019, http://projects.leadr.msu.edu/hominidfossils/items/show/103.