Fig. 5

Continued from Fig. 3. Cross sections of a pouch young Caluromys philander at the region of the opening of fenestra narina, a HL 6 mm, b HL 26 mm. Cross sections of a pouch young Macropus eugenii at the anterior region of the lamina transversalis anterior, c HL 11 mm, d HL 53 mm. Scale bars equal 500 μm