The functional significance of the squamosal suture in Australopithecus boisei
Bibliographic Data
| ID | 8316306 |
|---|---|
| Authors | Y Rak (0000-0002-1876-1436, University of California, Berkeley, corresponding author) |
| Year | 1978 |
| Volume | 49 |
| Issue | 1 |
| Pages | 71-78 |
| Publication date | 1978-07-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | American Journal of Physical Anthropology (JOURNAL) |
| Journal identifiers | ISSN: 0002-9483 • E-ISSN: 1096-8644 |
| Publisher | Wiley (PUBLISHER • GB) |
| DOI | 10.1002/ajpa.1330490111 |
| PMID | 98055 |
| OpenAlex | W2051702737 |
| Language | EN |
| Citations received | 25 |
| References cited | 11 |
A juvenile Australopithecus boisei specimen from the Omo basin, southern Ethiopia, is found to exhibit an extraordinarily large overlap of the temporal squama on the parietal, a phenomenon shared with at least two adult specimens of A. boisei. An attempt is made to interpret the overlap as a structural (bony/ligamentous) adaptation necessitated by the unique combination of certain components of the masticatory system of A. boisei . These are: (1) the massiveness and strength of the temporalis muscle, (2) its relatively anterior location, and (3) the lateral position of the masseter muscle due to the flaring of the zygomatic arches. The effect of the temporalis muscle is to create excessive pressure on the portion of the squamosal suture along the parietal, while the lateral placement of the masseter and the resultant increase of pressure on the temporal squama via the zygomatic arch tend to “loosen” the contact between the temporal and parietal bones
Australopithecus · Biology · Fibrous joint · Masseter muscle · Mastication · Masticatory force · Zygomatic arch · Anatomy · Evolution and Paleontology Studies · Geology · Medicine · Orthodontics · Paleontology · Pleistocene-Era Hominins and Archaeology · Primate Behavior and Ecology
Literaturverzeichnis
The Fossil Evidence for Paranthropus
Early archaeological sites, hominid remains and traces of fire from Chesowanja, Kenya
Australopithecus africanus
Diet in Early Hominin Species
Strain in the braincase and its sutures during function
A human parietal fossil found at the Shuidonggou site, Ningxia, China
The nature and affinities of the “robust” Australopithecines
Cranium of a juvenile Australopithecus boisei from the lower Omo Basin, Ethiopia
Functional morphology of the asterionic region in extant hominoids and fossil hominids
The allometry of relative cusp size in hominoid mandibular molars
On the squamosal suture of KNM‐WT 17000
Paranthropus boisei
Cranial morphology of Australopithecus afarensis
Functional implications of squamosal suture size in paranthropus boisei
New reconstruction of Krapina 5, a male Neandertal cranial vault from Krapina, Croatia
Squamosal suture of cranium KNM‐WT 17000
A new hominid parietal from Bodo, middle Awash Valley, Ethiopia
Temporal squama shape in fossil hominins
Biomechanical and taxonomic diversity in the Early Pleistocene in East Africa
Depositional environments, archeological occurrences and hominids from Members E and F of the Shungura Formation (Omo basin, Ethiopia)
Patterns of resource use in early Homo and Paranthropus
A reappraisal of early hominid phylogeny
The taxonomic status of the Chemeron temporal (KNM-BC 1)
The DNH 7 skull of Australopithecus robustus from Drimolen (Main Quarry), South Africa
Olduvai Gorge
On certain Eskimoid characters in Icelandic skulls
Cranium of a juvenile Australopithecus boisei from the lower Omo Basin, Ethiopia
The human mandible
The Makapansgat proto‐human australo‐pithecus prometheus
New australopithecines from East Rudolf, Kenya
The nature of the transition in the dental mechanism from pongids to hominids
| Unique citing works | 25 |
|---|---|
| Citations per year | 0,52 |
| Citation span | 1978 - 2026 (49) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 25 |