Fig. 3 in New material of the trechnotherian mammal Lactodens from the Early Cretaceous Jehol Biota: Comparison with Origolestes and implications for mammal evolution

Fig. 3. CT-rendered lower jaws and dentitions of the trechnotherian mammal Lactodens sheni Han and Meng, 2016 (ZGY0053), from Aptian, Lower Cretaceous Jiufotang Formation of Dapingfang, Caoyang City, Liaoning Province, China. A1–A3, left upper and lower dentition and dentary in medial (only teeth), lateral, and occlusal views, respectively. A4–A6, right upper and lower dentition and dentary in lateral, medial, and occlusal views, respectively. Note: angular end is not the mandibular condyle (see Fig. 6); coronoid tubercle, mis-labelled as "cp" in Han and Meng (2016: fig. 10). Upper and lower teeth in A1, A2, A4, A5 are in the original position that were preserved. Arrows in A2, A4 point to mental foramina (note the difference between the two mandibles). Question mark in A5 points to a faint groove that is not the Meckelian groove (compared to that of Origolestes lii in Fig. 6B).