Tooth Theory Revises History of Mammals

  title={Tooth Theory Revises History of Mammals},
  author={E. L. Robert Stokstad},
  pages={26 - 26}
The most important advance in mammalian dental evolution has long been regarded as the tribosphenic molar--a Cuisinart-like tooth that could both slice and grind. This was considered a key innovation, shared exclusively by placental mammals and marsupials, that helps explain their extraordinary success ever since the Cretaceous period. Now three paleontologists propose that the tribosphenic molar evolved not once, but twice--a highly provocative idea. 

Molecular Evolution of Tooth-Related Genes Provides New Insights into Dietary Adaptations of Mammals

It is revealed that mammalian tooth-related genes have experienced variable evolutionary histories, which provide some new insights into the molecular basis of dietary adaptation in mammals.

The Yolkless Egg and the Evolution of Eutherian Viviparity

Eutherian reproduction must have evolved in connection with genetic changes that caused fragility of the oocyte, instability of the follicle, and loss of the ability to produce vitellogenin, the main lipoprotein of yolk.