Lungfish
Videos
Lungfish, also known as dipnoans, are freshwater vertebrates belonging to the class Dipnoi. Lungfish are best known for their innovative respiratory system, including the ability to breathe air, and d
Neoceratodus forsteri, 2014 09 19
Lateral view of lungs of a dissected spotted lungfish (Protopterus dolloi)
Granddad, Shedd Aquarium, Chicago
South American lungfish
Coelacanth
Videos
Coelacanths are an ancient group of lobe-finned fish in the class Actinistia. As sarcopterygians, they are more closely related to lungfish and tetrapods than to ray-finned fish. There is only a singl
Lungfish
…during the Devonian, the last common ancestor of lungfish and tetrapods split into two separate evolutionary lineages, with the ancestor of the extant coelacanths diverging a little earlier from a sarcopterygian progenitor. Youngolepis and Diabolepis, dating to 419–417 million years ago, during Early Devonian…
Axelrodichthys araripensis Naturmuseum Senckenberg DSC02202
Fossil of Coelacanthus granulatus, the first described coelacanth, named by Louis Agassiz in 1839
Marjorie Courtenay-Latimer with the type specimen of Latimeria chalumnae
Pectoral fin of a West Indian Ocean coelacanth