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. 2016 Aug;13(121):20160374. doi: 10.1098/rsif.2016.0374

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© 2016 The Author(s)

Published by the Royal Society. All rights reserved.

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Figure 1. — Tooth types of two early mammals. (a) Triconodont tooth from an early mammal from India (Paikasigudodon yadagirii), shown in occlusal (top) and lingual (side) view (adapted from Prasad & Manhas [41]). Note the higher central cusp (protocone). (b) Tribosphenic tooth from a modern opossum (genus Didelphis), shown in occlusal view (adapted from an image taken from Dr Udo Savalli, Arizona State University). Blue dots highlight location of cusp apices. Both teeth are left maxillary molars, anterior to the right. (Online version in colour.)