Document Detail


Species attribution of the Swartkrans member 1 first metacarpals: SK84 and SKX 5020.
MedLine Citation:
PMID:  2275479     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Susman (Am. J. Phys. Anthropol. 75:277-278, 79:451-474; Science 240:781-784; In FE Grine (ed): Evolutionary History of the "Robust" Australopithecines. New York: Aldine de Gruyter, pp. 149-172) has attributed the morphologically similar SK 84 and SKX 5020 hominid first metacarpals to Homo erectus and Australopithecus robustus, respectively, and has inferred that both species exhibited derived pollical morphologies, indicating refined precision grips. Consideration of the structure of his taphonomic arguments indicates that there are no adequate nonmorphological reasons to attribute these specimens securely to one or the other of the craniodentally represented species at Swartkrans. His morphological arguments fail to note any significant differences between the two specimens. Only the contrast in size between the small SK 84 and large SKX 5020 bones might warrant a species distinction; yet comparison of their length ratio to distributions of modern human first metacarpal length ratios indicates that it is not possible to reject conclusively the null hypothesis that they are conspecific. Therefore, early hominid adaptive scenarios based on a derived Homo-like manual functional morphology in A. robustus remain without a secure paleontological basis.
Authors:
E Trinkaus; J C Long
Related Documents :
2744179 - Low acrosin activity in a subgroup of men with idiopathic infertility dose not correlat...
12037029 - The effect of replens on vaginal cytology in the treatment of postmenopausal atrophy: c...
17644989 - Sperm selection in assisted reproductive techniques.
10732059 - Computer-assisted sperm head morphometry analysis (asma) of cryopreserved ram spermatozoa.
12065459 - Measurement of volume changes in mouse spermatozoa using an electronic sizing analyzer ...
18986959 - Selection on sperm morphology under relaxed sperm competition in a wild passerine bird.
11594559 - Perifollicular vascularity and its relationship with oocyte maturity and ivf outcome.
21029899 - Aspheric microincision intraocular lens implantation with biaxial microincision catarac...
24851629 - Initial effects of a treatment by fixed partial dentures supported by mini dental impla...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of physical anthropology     Volume:  83     ISSN:  0002-9483     ISO Abbreviation:  Am. J. Phys. Anthropol.     Publication Date:  1990 Dec 
Date Detail:
Created Date:  1991-02-28     Completed Date:  1991-02-28     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0400654     Medline TA:  Am J Phys Anthropol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  419-24     Citation Subset:  IM    
Affiliation:
Department of Anthropology, University of New Mexico, Albaquerque, 87131.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Fossils
Hominidae / anatomy & histology*,  classification
Humans
Metacarpus / anatomy & histology*
Paleontology*
South Africa

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Pathophysiology and treatment of gram-negative sepsis.
Next Document:  Bilateral absence of the lesser trochanter in a late Epigravettian skeleton from Arene Candide (Ital...