Scientists Discover Giant, Prehistoric Salmon With Tusk-Like Teeth

Paleontologists suggest that the teeth could have served purposes such as defense, competitive combat, or as tools for digging.
Oncorhynchus rastrosus, a giant species of salmon that lived in the North American Pacific Northwest a few million years ago, sported a pair of front teeth that projected out from the sides of its mouth like tusks, according to a study recently published in the open-access journal PLOS ONE by Kerin Claeson from the Philadelphia College of Osteopathic Medicine, USA, and colleagues.