Brief communication: Population variation in human maxillary premolar accessory ridges (MxPAR).


:The purpose of this brief communication is to report the results of an analysis of maxillary premolar accessory ridges (MxPAR), a common but understudied accessory ridge that may occur both mesial and distal to the central ridge of the buccal cusp of upper premolars. We developed a new five-grade scoring plaque to better categorize MxPAR variation. Subsequently, we conducted a population analysis of MxPAR frequency in 749 dental casts of South African Indian, American Chinese, Alaskan Eskimo, Tohono O'odham (Papago), Akimel O'odham (Pima), Solomon Islander, South African Bantu, and both American and South African Whites. Northeast Asian and Asian-derived populations exhibited the highest MxPAR frequencies while Indo-European samples (South African Indians, American and South African Whites) exhibited relatively low frequencies. The Solomon Islanders and South African Bantu samples exhibited intermediate frequencies. Our analysis indicates that statistically significant differences in MxPAR frequency exist between major geographic populations. As a result, the MxPAR plaque has now been added to the Arizona State University Dental Anthropology System, an important contribution as maxillary premolar traits are underrepresented in analyses of dental morphology.


Am J Phys Anthropol


Burnett SE,Hawkey DE,Turner CG 2nd




Has Abstract


2010-02-01 00:00:00












  • Genetic markers of an aboriginal Taiwanese population.

    abstract::A group of Taiwan aborigines, the Toroko, was typed for 21 classical genetic loci. This is part of an ongoing program aimed at a comprehensive study of Taiwan aborigines. In this first paper a short summary of historical, archeological, and anthropological data in the literature is made, and results of the present sur...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Chen KH,Cann H,Chen TC,Van West B,Cavalli-Sforza L

    更新日期:1985-03-01 00:00:00

  • Schistosomiasis and hydration status: Schistosoma haematobium, but not Schistosoma mansoni increases urine specific gravity among rural Tanzanian women.

    abstract:OBJECTIVES:Schistosome infections can damage organs important for water homeostasis, especially the kidneys. Urogenital schistosomiasis (caused by Schistosoma haematobium) increases protein and blood in urine and intestinal schistosomiasis (caused by S. mansoni) affects total body water. However, no data exist on how d...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Rosinger AY,Young SL,Collins SM,Haider SR,Mishra P,Nagai HT,Petro M,Downs JA

    更新日期:2018-08-01 00:00:00

  • Knuckle walking signal in the manual digits of Pan and Gorilla.

    abstract::This article examines the curvature of the manual proximal and middle phalanges of species belonging to Pan, Gorilla, Ateles, Macaca, Pongo, Hylobates, and Cebus to determine whether middle phalangeal curvature, when considered in conjunction with proximal phalangeal curvature, yields a locomotor signal. Prior studies...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Matarazzo S

    更新日期:2008-01-01 00:00:00

  • Sexual dimorphism in the Japanese cranial base: a Fourier-wavelet representation.

    abstract::An approach, computational shape analysis (CSA), is presented here which utilizes a Fourier-wavelet representation to numerically describe shape features of biological forms. Two elements are involved: 1) elliptical Fourier functions (EFFs), to provide estimates of global aspects, and 2) continuous wavelet transforms ...

    journal_title:American journal of physical anthropology

    pub_type: 历史文章,杂志文章


    authors: Lestrel PE,Cesar RM Jr,Takahashi O,Kanazawa E

    更新日期:2005-11-01 00:00:00

  • Limbic frontal cortex in hominoids: a comparative study of area 13.

    abstract::The limbic frontal cortex forms part of the neural substrate responsible for emotional reactions to social stimuli. Area 13 is one of the cortical areas long known to be part of the posterior orbitofrontal cortex in several monkey species, such as the macaque. Its presence nevertheless in the human brain has been uncl...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Semendeferi K,Armstrong E,Schleicher A,Zilles K,Van Hoesen GW

    更新日期:1998-06-01 00:00:00

  • Histological investigations on the Tyrolean Ice Man.

    abstract::The 5,200-year-old Tyrolean Ice Man discovered in 1991 in the Otztal Alps is the world's most ancient known human glacier mummy. Histological investigation was aimed at 1) optimizing specimen preparation and 2) documenting the preservation state of (sub)cellular components. Minute pieces of frozen tissue were removed ...

    journal_title:American journal of physical anthropology

    pub_type: 历史文章,杂志文章


    authors: Hess MW,Klima G,Pfaller K,Künzel KH,Gaber O

    更新日期:1998-08-01 00:00:00

  • The utility of osteon shape and circularity for differentiating human and non-human Haversian bone.

    abstract::Distinguishing human from non-human bone fragments is usually accomplished by observation of gross morphology. When macroscopic analysis is insufficient, histological approaches can be applied. Microscopic features, like plexiform bone or osteon banding, are characteristic of non-humans. In the absence of such feature...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Dominguez VM,Crowder CM

    更新日期:2012-09-01 00:00:00

  • Estimating body mass in subadult human skeletons.

    abstract::Methods for estimating body mass from the human skeleton are often required for research in biological or forensic anthropology. There are currently only two methods for estimating body mass in subadults: the width of the distal femur metaphysis is useful for individuals 1-12 years of age and the femoral head is usefu...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Robbins G,Sciulli PW,Blatt SH

    更新日期:2010-09-01 00:00:00

  • Geographic altitude, surnames, and height variation of Jujuy (Argentina) conscripts.

    abstract::The height records of 48,589 conscripts born in Jujuy between 1870 and 1960 were examined in order to study the variation in adult male height (AMH) in terms of geographical altitude and surnames. Data were clustered by origin of surnames (divided into native and foreign names), decades, and according to the four Juje...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Bejarano IF,Dipierri JE,Andrade A,Alfaro EL

    更新日期:2009-02-01 00:00:00

  • Energetic costs of bipedal and quadrupedal walking in Japanese macaques.

    abstract::We investigated the energetic costs of quadrupedal and bipedal walking in two Japanese macaques. The subjects were engaged in traditional bipedal performance for years, and are extremely adept bipeds. The experiment was conducted in an airtight chamber with a gas analyzer. The subjects walked quadrupedally and bipedal...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Nakatsukasa M,Ogihara N,Hamada Y,Goto Y,Yamada M,Hirakawa T,Hirasaki E

    更新日期:2004-07-01 00:00:00

  • New fossil hominids from Laetolil, Tanzania.

    abstract::New fossil hominid specimens from the Laetolili fossil locality in Tanzania are described. The material includes mandibles and teeth derived from reliably-dated deposits of Pliocene age. Preliminary descriptions, measurements and illustrations are presented. ...

    journal_title:American journal of physical anthropology

    pub_type: 历史文章,杂志文章


    authors: White TD

    更新日期:1977-03-01 00:00:00

  • An academic genealogy on the history of American field primatologists.

    abstract::In this paper, we present the academic genealogy of American field primatologists. The genealogy has been compiled to formally document the historical record of this young field. Data have been collected from three main sources: 1) e-mail surveys, 2) library and Internet research, and 3) verbal communication through f...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Kelley EA,Sussman RW

    更新日期:2007-03-01 00:00:00

  • Quantifying phalangeal curvature: an empirical comparison of alternative methods.

    abstract::It has been generally assumed and theoretically argued that the curvature of finger and toe bones seen in some nonhuman primates is associated with cheiridial use in an arboreal setting. Assessment of such curvature in fossil primates has been used to infer the positional behavior of these animals. Several methods of ...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Stern JT Jr,Jungers WL,Susman RL

    更新日期:1995-05-01 00:00:00

  • Neutron-based computed microtomography: Pliobates cataloniae and Barberapithecus huerzeleri as a test-case study.

    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


    authors: Urciuoli A,Zanolli C,Fortuny J,Almécija S,Schillinger B,Moyà-Solà S,Alba DM

    更新日期:2018-08-01 00:00:00

  • Biomechanics of cross-sectional size and shape in the hominoid mandibular corpus.

    abstract::Mandibular cross sections of Pan, Pongo, Gorilla, Homo, and two fossil specimens of Paranthropus were examined by computed tomography (CT) to determine the biomechanical properties of the hominoid mandibular corpus. Images obtained by CT reveal that while the fossil hominids do not differ significantly from extant hom...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Daegling DJ

    更新日期:1989-09-01 00:00:00

  • Knuckle walking by a baboon (Papio cynocephalus).

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    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Hausfater G

    更新日期:1975-09-01 00:00:00

  • Taxonomic affinities and evolutionary history of the Early Pleistocene hominids of Java: dentognathic evidence.

    abstract::Temporal changes, within-group variation, and phylogenetic positions of the Early Pleistocene Javanese hominids remain unclear. Recent debate focused on the age of the oldest Javanese hominids, but the argument so far includes little morphological basis for the fossils. To approach these questions, we analyzed a compr...

    journal_title:American journal of physical anthropology

    pub_type: 历史文章,杂志文章


    authors: Kaifu Y,Baba H,Aziz F,Indriati E,Schrenk F,Jacob T

    更新日期:2005-12-01 00:00:00

  • A critique of homology as a morphological concept.

    abstract::Two sequences of nucleotides are homologous if they are descended through a chain of replication from a common precursor molecule. Since organs are not copies or transcriptions of organs, the concept of morphological homology has no such simple and unambiguous definition. The theoretical vagueness of morphological hom...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Cartmill M

    更新日期:1994-05-01 00:00:00

  • Restriction and persistence of polymorphisms of HLA and other blood genetic traits in the Parakanã Indians of Brazil.

    abstract::Results concerning HLA types and 22 other blood genetic systems are reported for the Parakanã Indians of northern Brazil, a tribe that is notable for the light color and pilosity of some of its members. No clear evidence of Caucasoid admixture was found, but the Parakanã show unusual frequencies in the EsD1, PGM1(1) G...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Black FL,Salzano FM,Layrisse Z,Franco MH,Harris NS,Weimer TA

    更新日期:1980-01-01 00:00:00

  • Hominid footprints at Laetoli: facts and interpretations.

    abstract::The history of discovery and interpretation of primate footprints at the site of Laetoli in northern Tanzania is reviewed. An analysis of the geological context of these tracks is provided. The hominid tracks in Tuff 7 at Site G in the Garusi River Valley demonstrate bipedality at a mid-Pliocene datum. Comparison of t...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: White TD,Suwa G

    更新日期:1987-04-01 00:00:00

  • The pattern of involvement of appendicular degenerative joint disease.

    abstract::Patterns of degenerative joint disease are investigated in the shoulder, elbow, hip, and knee joints of the macerated remains of approximately 800 individuals from 20th century American and two prehistoric populations. Age is an important contributory factor in all joints, but its effects are seen most directly in the...

    journal_title:American journal of physical anthropology

    pub_type: 历史文章,杂志文章


    authors: Jurmain RD

    更新日期:1980-07-01 00:00:00

  • Inbreeding effects on fetal growth in Beirut, Lebanon.

    abstract::Effects of consanguineous marriages on offspring's gestational age and anthropometrics at birth were investigated in Beirut through a hospital-based survey of 1,252 newborns. Twenty-five percent of all newborns were inbred, and the mean inbreeding coefficient was 1.25%. Neither prematurity rate nor weight, length, hea...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Khlat M

    更新日期:1989-12-01 00:00:00

  • Simian crease incidence and the correlation with thenar and hypothenar pattern types in Swedish patients with trisomy 21 (Down's syndrome).

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    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Rignell A

    更新日期:1987-03-01 00:00:00

  • Functional morphology of the mangabey mandibular corpus: relationship to dental specializations and feeding behavior.

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    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Daegling DJ,McGraw WS

    更新日期:2007-09-01 00:00:00

  • The ischium and hip extensor mechanism in human evolution.

    abstract::Although it is commonly stated that the ischia of the late Pliocence-early Pleistocene hominid fossils are long and ape-like, new interpretations show this view to be falacious. An important new theory proposed by Robinson concludes that the gracile form of early hominid was an efficient biped, but the robust form was...

    journal_title:American journal of physical anthropology

    pub_type: 历史文章,杂志文章


    authors: McHenry HM

    更新日期:1975-07-01 00:00:00

  • Sleep and arousal patterns of co-sleeping human mother/infant pairs: a preliminary physiological study with implications for the study of sudden infant death syndrome (SIDS).

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    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: McKenna JJ,Mosko S,Dungy C,McAninch J

    更新日期:1990-11-01 00:00:00

  • Ectopic maxillary third molar in Early Pleistocene Homo antecessor from Atapuerca-Gran Dolina site (Burgos, Spain).

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    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Martín-Francés L,Martinón-Torres M,Martínez de Pinillos M,Bayle P,Fernández-Colón P,García-Campos C,Modesto-Mata M,Carbonell E,Arsuaga JL,Bermúdez de Castro JM

    更新日期:2020-04-01 00:00:00

  • Nondestructive sampling of human skeletal remains yields ancient nuclear and mitochondrial DNA.

    abstract::Museum curators and living communities are sometimes reluctant to permit ancient DNA (aDNA) studies of human skeletal remains because the extraction of aDNA usually requires the destruction of at least some skeletal material. Whether these views stem from a desire to conserve precious materials or an objection to dest...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: Bolnick DA,Bonine HM,Mata-Míguez J,Kemp BM,Snow MH,LeBlanc SA

    更新日期:2012-02-01 00:00:00

  • Genetic analysis of manic-depressive illness.

    abstract::Two threshold models, a single locus model, and two combined models are fitted to data on familial incidence of bipolar affective disorder in 194 nuclear families ascertained through a bipolar proband. The relative fit of alternative transmission models is tested by a likelihood ratio chi-square with the degrees of fr...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: O'Rourke DH,McGuffin P,Reich T

    更新日期:1983-09-01 00:00:00

  • Sex and age differences in the diet and ingestive behaviors of sooty mangabeys (Cercocebus atys) in the Tai Forest, Ivory Coast.

    abstract::Members of the Cercocebus-Mandrillus clade are united by several morphological features, including expanded premolars which are argued to be associated with a preponderance of hard objects in the diet. We test the association between premolar expansion and hard object feeding by examining how different dental regions ...

    journal_title:American journal of physical anthropology

    pub_type: 杂志文章


    authors: McGraw WS,Vick AE,Daegling DJ

    更新日期:2011-01-01 00:00:00