Some stages in the early development of the post-incisor dentition of Trichosurus vulpecula (Phalangeroidea: Marsupialia)



The present paper reports observations from serial sections of five pouch-young specimens on the early stages of tooth ontogeny in the post-incisor dentition of Trichosurus vulpecula. The order of cusp development and calcification for the molariform teeth is recorded and closely resembles that of placentals. Some features concerning the development of the replacing premolar are noted and compared with the conditions observed in Setonix brachyurus, another marsupial. A number of non-functional cheek teeth are reported.