Fig. 12From: On the development of the chondrocranium and the histological anatomy of the head in perinatal stages of marsupial mammalsCross-section of Perameles sp. (ZIUT, HL 17.5Â mm) at the level of the otic capsule. In section 53.02.01, the lateral head vein is inside the prootic canal. The lateral head vein is the boundary for the prootic sinus and the sphenoparietal emissary vein, and it is retained in some adult marsupials [68]. Numbers of the histological serial sections are indicated at the bottom right of each figure. Numbers ascend in caudal directionBack to article page