Fig. 2

Overview of the variable shape of the cupula nasi anterior in mammals. Lateral view on the left, dorsal on the right. Cartilage colorless, bones in grey. Characters and character states are indicated (e.g., 26–1). a Tachyglossus aculeatus, HL 27 mm [20], b Didelphis marsupialis, CRL 45.5 mm [42], c Wallabia rufogrisea, HL 12 mm [54], d Vombatus ursinus, HL 14 mm [52]. Drawings by Timea Bodogán, modified from cited sources. Not to scale. Continued in Fig. 4