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The jaw lever system in ungulates: a new model
Abstract
In ungulates the distance from the jaw joint to the last molar is approximately the same as that of the grinding tooth row length. An hypothesis is presented that attempts to explain why ungulate grinding teeth are positioned where they are along the jaw. If the jaw joint on the balancing side serves as the fulcrum in anisognathus animals, a region along the jaw is defined, corresponding to where teeth are actually found, where rather simple muscle action can apply equal forces at any point. The ability to produce the same force at any point in this region, as such, may not be the critical feature since anterior or posterior to this region, tooth placement produces either a relatively inefficient or an unstable condition.
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Citations
Cited by
Dental Functional Morphology: How Teeth Work
Lucas, P. W. (2004) · doi:10.1017/cbo9780511735011 · Cited by 550
Mechanisms of Foraging in Mammalian Herbivores: New Models of Functional Response
Spalinger, D. E., & Hobbs, N. T. (1992) · The American Naturalist · doi:10.1086/285415 · Cited by 468
Koolstra, J. H., van Eijden, T. M. G. J., Weijs, W. A., & Naeije, M. (1988) · Journal of Biomechanics · doi:10.1016/0021-9290(88)90219-9 · Cited by 366
Bite force production capability and efficiency in Neandertals and modern humans
O'Connor, C. F., Franciscus, R. G., & Holton, N. E. (2005) · American Journal of Physical Anthropology · doi:10.1002/ajpa.20025 · Cited by 120
Wroe, S., Parr, W. C. H., Ledogar, J. A., Bourke, J., Evans, S. P., Fiorenza, L., Benazzi, S., Hublin, J.-J., Stringer, C., Kullmer, O., et al. (2018) · Proceedings of the Royal Society B: Biological Sciences · doi:10.1098/rspb.2018.0085 · Cited by 90
Metadata
- Authors
- Greaves, W. S.
- Venue
- Journal of Zoology
- Publisher
- Wiley
- Published
- 1978-02
- Volume
- 184
- Issue
- 2
- Pages
- 271-285
- ISSN
- 0952-8369 (ISSN-L)
- 1469-7998
- OpenAlex
- W2130120340
- Cited by
- 260
- References
- 0
- FWCI
- 6.99
- Type
- journal article
- Language
- en
- Open access
- closed
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- Greaves, W. S. (1978). The jaw lever system in ungulates: a new model. Journal of Zoology. https://doi.org/10.1111/j.1469-7998.1978.tb03282.x
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
