Air-breathing fish that can hop and walk across the floor on their fins hint that walking may have evolved underwater before such animals began migrating on to land, scientists find.
The distant ancestors of humans and all mammals, reptiles, birds, amphibians and other four-limbed animals, or tetrapods, are fish that eventually developed the ability to breathe on land. One of the few living fish related to these ancient land-dwellers are air-breathers known as lungfish, which are found today in Africa, South America and Australia.
The distant ancestors of humans and all mammals, reptiles, birds, amphibians and other four-limbed animals, or tetrapods, are fish that eventually developed the ability to breathe on land. One of the few living fish related to these ancient land-dwellers are air-breathers known as lungfish, which are found today in Africa, South America and Australia.
