Heterodont

In anatomy, a heterodont (from Greek, meaning 'different teeth') is an animal which possesses more than a single tooth morphology and/or exhibit considerable size variation within the tooth row.[1][2][3] Human dentition is heterodont and diphyodont as an example.[4] Members of the Synapsida (including mammals) generally possess incisors, canines ("dogteeth"), premolars, and molars. The presence of heterodont dentition is evidence of some degree of feeding and or hunting specialization in a species. In contrast, homodont or isodont dentition refers to a set of teeth that possess the same tooth morphology.

In invertebrates, the term heterodont refers to a condition where teeth of differing sizes occur in the hinge plate, a part of the Bivalvia.[1]

## References

1. ↑ 1.0 1.1 A Dictionary of Earth Sciences. Encyclopedia.com. 10 October 2017. http://www.encyclopedia.com/plants-and-animals/zoology-and-veterinary-medicine/zoology-general/heterodont.
2. ↑ Tanika, M (22 July 2016). "Dentition in Mammals: Definition, Origin, Types and Unusual Teeth in Mammals". http://www.biologydiscussion.com/zoology/mammals/dentition-in-mammals-definition-origin-types-and-unusual-teeth-in-mammals/41558.
3. ↑ Huttenlocker, Adam K.; Singh, Suresh A.; Henrici, Amy C.; Sumida, Stuart S. (December 2021). "A Carboniferous synapsid with caniniform teeth and a reappraisal of mandibular size-shape heterodonty in the origin of mammals" (in en). Royal Society Open Science 8 (12). doi:10.1098/rsos.211237. ISSN 2054-5703. PMID 34925870. Bibcode: 2021RSOS....811237H.
4. ↑ Hovorakova, Maria; Lesot, Herve; Peterka, Miroslav; Peterkova, Renata (10 May 2018). "Early development of the human dentition revisited". Journal of Anatomy 233 (2): 135–145. doi:10.1111/joa.12825. PMID 29745448.

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