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All lungfish demonstrate an uninterrupted cartilaginous notochord and an extensively developed palatal dentition. Basal ("primitive") lungfish groups may retain marginal teeth and an ossified braincase, but derived lungfish groups, including all modern species, show a significant reduction in the marginal bones and a cartilaginous braincase.
She was joined by another lungfish, named after Herb Caen, in 1952 [7] [8] or 1958. [2] She was given the name Methuselah by Steinhart Aquarium director John McCosker in 1988 after spending 50 years at the aquarium. [9] Due to damage incurred in the 1989 Loma Prieta earthquake, the original Steinhart Aquarium was torn down in 2005.
The West African lungfish (Protopterus annectens), also known as the Tana lungfish or simply African lungfish, is a species of African lungfish. [ 6 ] [ 7 ] It is found in a wide range of freshwater habitats in West and Middle Africa , as well as the northern half of Southern Africa .
The South American lungfish is an extraordinary creature - in some sense, a living fossil. Inhabiting slow-moving and stagnant waters in Brazil, Argentina, Peru, Colombia, Venezuela, French Guiana ...
Ceratodontiformes is the only extant order of lungfish, containing the families Neoceratodontidae, Lepidosirenidae, and Protopteridae as well as many other extinct groups. Members of this group are the only lungfish known to have survived the Permian-Triassic extinction event .
Neoceratodus is a genus of lungfish in the family Neoceratodontidae.The extant Australian lungfish (Neoceratodus forsteri) is the only surviving member of this genus, but it was formerly much more widespread, being distributed throughout Africa, Australia, and South America. [1]
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The South American lungfish (Lepidosiren paradoxa), also known as the American mud-fish [6] and scaly salamanderfish, [7] is the single species of lungfish found in swamps and slow-moving waters of the Amazon, Paraguay, and lower Paraná River basins in South America. [8]