Palaeontologists studied 45-million-year-old fossil frogs from the Geiseltal site in central Germany. Remarkably, the fossils show full body outlines of the soft tissues.

J. T. VAN BRUGGEN K. ZERAHN Nature 188, 499–500 (1960) Cite this article 28 Accesses 7 Citations Metrics ...

Toxins found in the skin of poison dart frogs may hitch a ride there via molecular taxicabs. As a group, poison dart frogs (Dendrobatidae) host an assortment of more than 500 poisonous compounds ...

Looking deep within mammalian spit-producing glands, scientists were recently surprised to find an ancient cell type long thought to exist primarily in the slimy skin of frogs and fish. Such ...