1 Introduction Among vertebrates, mammals stand out with the dual nature of their specialized masticatory apparatus (Luo 2007; Ungar 2010; Berkovitz and Shellis 2018; Martin and Koenigswald 2021). On one hand, the specific nature of mammalian teeth lies in their simple mode of replacement (i.e., only two sets of teeth, the permanent replacing the deciduous ones) and their limited number in the jaw, which are tightly associated to a determinate skull growth (Luo et al. 2004; Kemp 2005).
