Sentence Examples


  • On the other hand, there are those who believe that the functional dentition (other than the replacing premolar and the molars) correspond to the milk-dentition of placentals, and that the rudimentary tooth-germs represent a "prelacteal" dentition.
  • Owing to the antiquity of both placentals and marsupials, the arboreal character of the feet of the modern forms of the latter is of little importance.
  • Finally, there is the hypothesis that marsupials are the descendants of placentals, in which case, as was suggested by its discoverer, the placenta of the bandicoots would be a true vestigial structure.
  • Other distinctive features by which marsupials are separated from monodelphians or placentals will be found in the article last mentioned.
  • On the assumption that these functional teeth correspond to the milk-series of placentals, "marsupials in this respect agree exactly with modern elephants, in which the same peculiarity exists.