Leaf teeth, i.e. projections of the leaf margin, are common among angiosperms. These structures may differ in several aspects, e.g. in the presence or absence of an associated gland. Cucurbitoid teeth ...

In the depths of the abyss, an evolutionary mystery has just been solved by biologists. The spotted ratfish, a deep-sea chimera, possesses a unique dental structure... on its forehead! This anatomical ...