Lobe-finned fishes (Sarcopterygii) contain the coelacanths, the lungfish and various other extinct groups. This class of fish was ancestral to all of the four-legged vertebrates: amphibians, reptiles, birds and mammals. The bones of the pelvis, shoulder girdle and fins of lobe-finned fishes resembles a primitive, limb-like structure.
Scientific name: Sarcopterygii
Jaws were a significant development in the evolution of fish.
Jaws were significant in the evolution of fish. They become very effective food gatherers, some growing into very large creatures indeed, such as the primitive shark.
Specialised SCUBA allows underwater demonstration of fish differences.
This sequence from the early 1980s shows one of the early instances of underwater presenting. It became possible as a result of the developments in full face plates which allowed Sir David not only to be able to deliver his commentary but to be recorded clearly during a dive.
The following habitats are found across the Lobe-finned fishes distribution range. Find out more about these environments, what it takes to live there and what else inhabits them.
Discover what these behaviours are and how different plants and animals use them.
Additional data source: Animal Diversity Web