[Disappearance of the avian teeth or "when birds had teeth"].
Authors describe the evolution of the avian lineage since its origin to our days and in particular the characteristics of the Jurassic or Cretaceous periods. They evoke the mechanisms which explain the involution of birds' teeth, their complete disappearance, birds nowadays having a beak instead. They stress the importance of natural selection and heterochrony.
Nadalig
D
D
UFR d'Odontologie, 33082 Bordeaux, France.
Rouas
A
A
D000818:Animals; D001502:Beak; D005075:Biological Evolution; D001717:Birds; D025061:Dinosaurs; D009154:Mutation; D014070:Tooth
La disparition de la denture avienne ou "quand les poules avaient des dents".