Abstract:
:In a series of specimens extending from fossil material through recent vertebrates including man there occurs a gradual phylogenetic increase in the degree of humeral torsion. A further (ontogenetic) torsion is superimposed upon the phylogenetic one in man which increases from birth until the proximal epiphysial cartilage of the humerus disappears and bony fusion occurs. There is a distinct correlation between the calculated strength of humeral rotator muscles inserting above and below the proximal epiphysis; this suggests that they provide the forces involved in the production of humeral torsion. It is shown that ontogenetic or secondary torsion occurs proximally and not along the shaft of the bone. Differences in the degree of humeral torsion in either sex of adult Whites and Negroes are given and discussed.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Krahl VEdoi
10.1002/ajpa.1330450325subject
Has Abstractpub_date
1976-11-01 00:00:00pages
595-9issue
3 pt. 2eissn
0002-9483issn
1096-8644journal_volume
45pub_type
杂志文章abstract::A survey of nine polymorphic loci for 82 North Amerindian populations was undertaken to test the hypothesis that increasing levels of sociocultural complexity are ineluctably accompanied by increased heterozygosity. The data reveal a significant relationship in the predicted direction. Moreover, the significant correl...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330670308
更新日期:1985-07-01 00:00:00
abstract::Age-dependent cortical bone loss in adult females from a skeletal assemblage from 3rd-4th century AD England was studied using metacarpal radiogrammetry. Results showed reduced peak cortical bone thickness compared with modern subjects, and the magnitude of cortical bone loss in older females compared with their young...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20365
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVES:Early Byzantine (A.D. 330-842) monastic rules stipulated that entrants relinquished familial connections, personal belongings and secular relationships to become part of the ascetic collective that continued in death, resulting in bioarchaeological marginalization, as was the case of the monastics excavated ...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.23993
更新日期:2020-05-01 00:00:00
abstract::The Warao Indian village of Jobure has two modes for height within its adult male population. One mode is at 158 cm and the second occurs at 169 cm. Mean height for adult males and females for this village is significantly higher (alpha less than or equal to 0.05) than for the other Warao villages studied. Examination...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330530311
更新日期:1980-09-01 00:00:00
abstract::Metric and morphological characterizations of the permanent teeth from a total of 155 prehistoric Amerindians are presented. The individuals represent samples from three Ohio Valley burial complexes (considered together as the Late Diffuse group): Glacial Kame, Adena and Ohio Hopewell. Metric data include common measu...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330500413
更新日期:1979-05-01 00:00:00
abstract::Bone samples from a Middle Bronze Age (ca., 1600-1300 BC) site were prepared for histological analysis. Preliminary results suggested that components of bone marrow remained preserved. To verify these findings and optimize the sample preparation procedure, we conducted experiments varying the type of acid used to deca...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22375
更新日期:2013-12-01 00:00:00
abstract::Isotope variations were studied in necropolises of the early (6th to 7th century CE) and central (10th to 11th century CE) medieval period located in Fruili-Venezia Giulia (Northeastern Italy). The two periods each shortly followed two great barbarian invasions that changed the politics and economy of Italy: the arriv...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.22553
更新日期:2014-08-01 00:00:00
abstract::In various environments where primates are presently observed, as well as in forests and savannas which have been inhabited by australopithecines and early hominids, there are (or there have been presumably) categories of substances eliciting taste signals associated with stereotyped responses. Such is the case for va...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10046
更新日期:2002-04-01 00:00:00
abstract::Morphometric data on postcranial elements of ten species of Old World primates are used to test the elastic similarity model of limb scaling. The data are divided into three groupings to exclude as much variation due to differences in locomotor adaptation as possible. The data on skeletal diameters fits the model reas...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330650313
更新日期:1984-11-01 00:00:00
abstract::Recent research shows that a bacterial life form, Erysipelothrix insidiosa, can produce rheumatoid arthritis in deer, swine, and dogs, and that a number of animals, including man, birds, and fish, may be infected by the organism. Examination of the archaeological record suggests that both cultural and biological varia...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330430109
更新日期:1975-07-01 00:00:00
abstract::While hybridization has been reported for a large number of primate taxa, there is a general lack of data on hybrid morphology for wild individuals with known genetic ancestry. A confirmed hybrid zone for the closely related Neotropical primates Alouatta palliata and A. pigra has provided a unique opportunity to study...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22196
更新日期:2013-02-01 00:00:00
abstract::Fourteen morphologic crown traits were observed in a sample of 1528 Pima Indians of south-central Arizona. Pima dentitions are characterized by high frequencies of shoveling, incisor winging, the hypocone, the lower canine distal accessory ridge, cusp 6, and the protostylid. They exhibit low frequencies of the metacon...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330610103
更新日期:1983-05-01 00:00:00
abstract::Estimations of age from tooth formation standards for a large (n = 282) sample of subadult skeletal remains from a 19th century historic cemetery sample were analyzed. The standards of Moorrees et al. (1963a,b) for the permanent and deciduous teeth, and Anderson et al. (1976) for the formation of permanent dentition w...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330920207
更新日期:1993-10-01 00:00:00
abstract:OBJECTIVES:High-resolution imaging of fossils with X-ray computed microtomography (μCT) has become a very powerful tool in paleontological research. However, fossilized bone, embedding matrix, and dental tissues do not always provide a distinct structural signal with X-rays. We demonstrate the benefits of high-resoluti...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23467
更新日期:2018-08-01 00:00:00
abstract::Anthropologists were quick to recognize the potential of new techniques in molecular biology to provide additional lines of evidence on questions long investigated in anthropology, as well as those questions that, while always of interest, could not have been addressed by more traditional techniques. The earliest anci...
journal_title:American journal of physical anthropology
pub_type: 杂志文章,评审
doi:10.1002/ajpa.10179
更新日期:2002-01-01 00:00:00
abstract::A new genus and species of notharctine primate, Hesperolemur actius, is described from Uintan (middle Eocene) aged rocks of San Diego County, California. Hesperolemur differs from all previously described adapiforms in having the anterior third of the ectotympanic anulus fused to the internal lateral wall of the audit...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330980406
更新日期:1995-12-01 00:00:00
abstract::Genetic data consisting of 14 red cell antigen groups and 11 serum and erythrocytic protein marker systems from four Eskimo populations of the Norton Sound area of Alaska are reported. The population structure of these four groups in analyzed both separately and within the larger context by comparison to 15 other circ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330550204
更新日期:1981-06-01 00:00:00
abstract::Neanderthals and anatomically modern humans (AMHs) may have lived in close proximity in the Near East region during Middle Paleolithic times. Although functional morphological analyses suggest a marked behavioral contrast between these two human groups, new dental micro- and macro-wear studies, together with new archa...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22335
更新日期:2013-09-01 00:00:00
abstract::Considerable attention has been devoted to variation in levels of energy expenditure between and within populations; these are commonly evaluated following international guidelines for grading light, moderate, and heavy physical activity levels (PAL). This study presents activity profiles by season and sex for subsist...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199605)100:1<7::AID-AJPA2>
更新日期:1996-05-01 00:00:00
abstract::Dart's 1925 announcement of Australopithecus africanus (Dart: Nature 115 [1925] 195-199) was highly controversial, partly because of an interpretation of the Taung natural endocast that rested on an erroneous identification of the lambdoid suture as the lunate sulcus. Unpublished materials from the University of Witwa...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.21184
更新日期:2009-01-01 00:00:00
abstract::The Spearman-Brown Prophesy formula, derived from psychometrics, may be used in anthropometric studies to describe the relationship between the intraclass reliability coefficient for a single measurement and the reliability resulting from the mean of replicate measurements. This theory may be applied to determine expe...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330790108
更新日期:1989-05-01 00:00:00
abstract::A matrix decomposition model for analyzing prehistoric intracemetery biological variability is presented. The model, based on the correlation between interindividual biological and burial distance matrices, provides an estimate of the number of distinct burial populations interred within a single cemetery, which effec...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10221
更新日期:2003-11-01 00:00:00
abstract::Recent biomechanical analyses examining the feeding adaptations of early hominins have yielded results consistent with the hypothesis that hard foods exerted a selection pressure that influenced the evolution of australopith morphology. However, this hypothesis appears inconsistent with recent reconstructions of early...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22285
更新日期:2013-07-01 00:00:00
abstract::Recent studies have demonstrated the potential application of computed tomography (CT) in research into bone density. Clinical studies of bone density using CT commonly employ a dipotassium phosphate phantom to calibrate measurements of mineral density. Designed for in vivo studies, the use of this phantom requires th...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199708)103:4<557::AID-AJPA
更新日期:1997-08-01 00:00:00
abstract:OBJECTIVES:We present a new distance-based exponential regression approach based on published histological data to refine the objectivity, accuracy, and precision of age estimates of LEH defect formation on the anterior dentition. METHODS:Published histological data of anterior tooth crown growth for two samples (nort...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23764
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVES:The present study aimed at investigating the timing of birth across the day in a rural population of indigenous and nonindigenous women in the province of Formosa, Argentina in order to explore the variation in patterns in a non-Western setting. MATERIALS AND METHODS:This study utilized birth record data tr...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23483
更新日期:2018-08-01 00:00:00
abstract::Previous studies of the correlations between the languages spoken by human populations and the genes carried by the members of those populations have been limited by the small amount of genetic markers available and by approximations in the treatment of linguistic data. In this study we analyzed a large collection of ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20622
更新日期:2007-08-01 00:00:00
abstract::In investigating the dermatoglyphics of hyperactive subjects, it was proposed that if similar hyperactives were sampled and significant differences were found from suitable controls, a genetic effect could be responsible. From two clinical populations, we ascertained 26 subjects in 24 sibships comprising the hyperacti...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330590303
更新日期:1982-11-01 00:00:00
abstract::Gorillas occupy a variety of habitats from the west coast to eastern central Africa. These habitats differ considerably in altitude, which has a pronounced effect on forest ecology. Although all gorillas are obligate terrestrial knuckle-walking quadrupeds, those that live in lowland habitats eat fruits and climb more ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22451
更新日期:2014-04-01 00:00:00
abstract:OBJECTIVES:The human respiratory apparatus is characterized by sexual dimorphism, the cranial airways of males being larger (both absolutely and relatively) than those of females. These differences have been linked to sex-specific differences in body composition, bioenergetics, and respiratory function. However, whethe...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23051
更新日期:2016-11-01 00:00:00