Stephen J. Jacquemin, David J. Cicimurri, Jun A. Ebersole, Madelyn Jones, Zach Whetstone & Charles N. Ciampaglio. 2016. Quantifying heterodonty in the late Devonian (Upper Famennian) sharks Cladoselache and Ctenacanthus from the Ohio Shale, USA. – PalArch’s Journal of Vertebrate Palaeontology 13, 1 (2016), 1-20. ISSN 1567-2158. 20 pages + 5 plates, 7 figures.

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Differentiation of tooth size and shape within the jaw (i.e. heterodonty) is an expected pattern in the majority of Neoselachii sharks. Various forms of heterodonty may be observed within an individual set of jaws, which can be the result of tooth position (monognathic), upper or lower jaw position (dignathic), tooth file or developmental position (ontogeny), […]