Fig. 4

Traced history of characters 75 and 125. a. Character 75 – Characteristic notch (so-called leptolepid notch) in the anterodorsal ascending margin of the dentary: absent [0]; present [1]. b. Character 125 – Number of vertebrae (including preural centrum 1): fewer than 45 [0], between 45 and 65 [1], more than 65 [2]