A large male hominin cranium from Sterkfontein, South Africa, and the status ofAustralopithecus africanus
- Permanent Link:
- A large male hominin cranium from Sterkfontein, South Africa, and the status ofAustralopithecus africanus
- Series Title:
- Journal of Human Evolution
- Lockwood, Charles A.
Tobias, Phillip V.
- Publication Date:
- Subjects / Keywords:
- Australopithecus ( local )
Hominids ( local )
Systematics ( local )
Variation ( local )
Sexual Dimorphism ( local )
- serial ( sobekcm )
- Stw 505 is the most complete hominin cranium discovered in Sterkfontein Member 4 since Broom's excavations. It was foundin situin Member 4 breccia in 1989 and is larger, on the whole, than any other cranium from Sterkfontein that has comparable parts. Displacement due to breakage, as well as plastic deformation, has affected Stw 505 in several areas, especially the face and the vault. Diagnosticmorphology is nevertheless abundant in the specimen. In several areasâ€”the distinct anterior pillar, the straight inferior border of the zygoma, the pattern of cresting on the naso-alveolar clivus, the basal aspect of the temporal boneâ€”Stw 505 closely matches the morphology of specimens ofAustralopithecus africanusand is distinct from other hominins. Some isolated characters overlap with other groups, mainly earlyHomoand/orA. robustus. However, only the hypodigm ofA. africanuscan accommodate the entire suite of morphology.
In some cases, Stw 505 introduces more variation into the Sterkfontein sample. For example, prominent superciliary eminences occupy the medial portions of the supraorbital region and flow medially into a strongly protruding glabellar mound. These characteristics are probably attributable to sexual dimorphism. In many respects, Stw 505 highlights similarities betweenA. africanusand earlyHomo. Comparison with other species suggests that males ofA. africanusdo not show derived features ofA. robustusthat are not also present in females, and that cranial differences betweenA. afarensisandA. africanushave, if anything, been understated.
- Original Version:
- Journal of Human Evolution, Vol. 36, no. 6 (1999-6).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
No images or PDF downloads are available for this resource.
Cras ut cursus ante, a fringilla nunc. Mauris lorem nunc, cursus sit amet enim ac, vehicula vestibulum mi. Mauris viverra nisl vel enim faucibus porta. Praesent sit amet ornare diam, non finibus nulla.
Cras efficitur magna et sapien varius, luctus ullamcorper dolor convallis. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Fusce sit amet justo ut erat laoreet congue sed a ante.
Phasellus ornare in augue eu imperdiet. Donec malesuada sapien ante, at vehicula orci tempor molestie. Proin vitae urna elit. Pellentesque vitae nisi et diam euismod malesuada aliquet non erat.
Nunc fringilla dolor ut dictum placerat. Proin ac neque rutrum, consectetur ligula id, laoreet ligula. Nulla lorem massa, consectetur vitae consequat in, lobortis at dolor. Nunc sed leo odio.