On deflecting wrinkles and the Dryopithecus pattern in human mandibular molars
Bibliographic Data
| ID | 8316534 |
|---|---|
| Authors | Donald H Morris (Arizona State University, corresponding author) |
| Year | 1970 |
| Volume | 32 |
| Issue | 1 |
| Pages | 97-104 |
| Publication date | 1970-01-01 |
| 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.1330320112 |
| PMID | 5415591 |
| OpenAlex | W2010536955 |
| Language | EN |
| Citations received | 16 |
| References cited | 7 |
The utility of the traditional Dryopithecus pattern observations on mandibular molars in hominid dental analysis has been challenged recently from several points of view. Both fossil and contemporary evidence suggest the independence of cusp number and groove pattern on mandibular molars and the quality of dentitions which are normally available for study make it difficult to determine both aspects of pattern (cusp number, groove pattern) equally. Now this paper shows that one of the polymorphisms on the occlusal surface of mandibular molars, the “deflecting wrinkle,” may be responsible for the spurious appearance of a Y molar pattern. It presence serves to insure a “2–3 contact” and hence the identification of the Y molar pattern. While seldom reported in traditional dental data, the wrinkle varies in frequency from 7% in South African white first permanent molars to 78.5% in Bushmen. Elsewhere, Hanihara has proposed that it be considered part of the “Mongoloid dental complex”
Biology · Cusp (singularity · Genus · Geometry · Mandible (arthropod mouthpart · Mandibular first molar · Mandibular molar · Mandibular second molar · Molar · Occlusion · Zoology · Dentistry · Evolution and Paleontology Studies · Mathematics · Medicine · Morphological variations and asymmetry · Orthodontics · Pleistocene-Era Hominins and Archaeology
Reconstruction of Spatial Organization and Cemetery Structure of Preadult Burials at the Phaleron Burial Ground (Archaic Athens, Greece) Using Deciduous Dental Morphology
The Anthropology of Modern Human Teeth
Compliant walking in primates
Relationship between shortness of final body height and fluctuating asymmetry in Turkish young males
Biological affinities and regional microevolution among pre-Hispanic communities of Colombia's Northern Andes
The anthropological value of minor variants of the dental crown
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The dental morphology of Pima Indians
Brief communication
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Observer error, dental wear, and the inference of new world sundadonty
Dental anthropology in the Ajpa
Morphological and metrical comparison of San and Central Sotho dentitions from southern Africa
Complex segregation analysis of dental morphological variants
Evolutionary and morphological significance of the deflecting wrinkle in the lower molars of the hominoidea
| Citations per year | 0.29 |
|---|---|
| Citation span | 1971 - 2026 (56) |
| Highly cited | No |