THE MORPHOLOGY OF KNM-ER1805: A Reconsideration of an Enigmatic Specimen
| dc.creator | Grossman, Ricci L. | |
| dc.date.accessioned | 2022-03-29T21:11:33Z | |
| dc.date.available | 2022-03-29T21:11:33Z | |
| dc.date.issued | 2009 | |
| dc.description.abstract | In the past, KNM-ER 1805 has been designated as a paratype for Homo erectus, H. ergaster, H. habilis, and H. rudolfensis. Based on its stratigraphic position within the KBS layer (~1.85mya) of the Koobi Fora Formation, this specimen can be temporally associated with all of these taxa, and with Paranthropus boisei. Although the majority of researchers attribute KNM-ER 1805 to the genus Homo, some suggest it might be more appropriately allocated to Paranthropus or Australopithecus, thus this issue remains unresolved. This study examines 27 metric and 122 non-metric cranial and mandibular features of several groups of African Plio-Pleistocene hominins to determine the phylogenetic status of KNM-ER 1805 relative to contemporary hominin taxa. It employs multivariate exploration techniques (principal components and discriminant function analyses) and phylogeny reconstruction methods: CONTML for continuous characters as well as PAUP* (parsimony) and MrBayes (Bayesian analysis) for discrete characters. Results of the multivariate analyses reveal an association between KNM-ER 1805 and specimens allocated to A. africanus, H. habilis, and H. ergaster. Cladograms produced from the phylogenetic analyses show little resolution, but in each instance where a clear separation between Homo and the australopithecines (Paranthropus and Australopithecus) is revealed, KNM-ER 1805 consistently groups with the australopithecines. These results suggest KNM-ER 1805 is not a typical specimen of H. habilis/rudolfensis or H. erectus/ergaster, despite the fact that it has been cited as a paratype for each of these taxa. Furthermore, these results suggest the affinity of this enigmatic specimen may not lie with the genus Homo at all. | en |
| dc.identifier.uri | https://hdl.handle.net/1969.1/195895 | |
| dc.language.iso | en | |
| dc.subject | KNM-ER 1805 | en |
| dc.title | THE MORPHOLOGY OF KNM-ER1805: A Reconsideration of an Enigmatic Specimen | en |
| dc.type | Technical Report | en |
| local.department | Anthropology | en |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- grossman-MAproject (002).pdf
- Size:
- 672.41 KB
- Format:
- Adobe Portable Document Format
- Description:
- non-thesis research paper
License bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- license.txt
- Size:
- 1.43 KB
- Format:
- Item-specific license agreed upon to submission
- Description: