Fig. 1: Tooth replacement in maxillary dentition of Mesenosaurus efremovi.
From: Permian hypercarnivore suggests dental complexity among early amniotes
a Reconstruction of M. efremovi skull in lateral view. Note that gaps in dentition represent shed teeth that are being replaced. b Maxillary dentition of ROMVP 85456 in lingual view. c Tooth family with a functional tooth and two successive replacement teeth. d Tooth family with a functional tooth and a single replacement tooth. e Photograph of maxilla (ROMVP 85524) in occlusal view showing the pattern of tooth replacement, with new teeth developing in the sockets of old teeth after the latter were shed.
