ACTON, Australia, Sept. 30 (UPI) --Scientists believe a 400 million-year-old fish fossil holds clues to the evolutionary origins of human teeth. Upon excavation, it wasn't clear whether the ancient ...

The origin of teeth in the evolutionary mystery of the world’s animal timeline is very much a mystery. We know animals haven’t had teeth since the dawn of time, but what we don’t know exactly when ...

A study finds an early mammaliaform displaying tooth anatomy that gives insight into the development of structures such as complex molars and multiple roots. One evolutionary milestone in the ...

Cilk1 deficiency disrupts normal tooth development by altering primary cilia function and weakening Hedgehog signaling. This ...