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n.1.(Zool.) An African genus of ganoid fishes including the bichir.
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A contribution to the study of the lungs of the Protopterus annectens and Polypterus senegalensis.
Found in Africa, the Polypterus can breathe air and move on land, and it closely resembles the ancient fishes that evolved into tetrapods.
Each of the scales that cover the long body of Polypterus senegalus is made up of multiple layers.
Among the most ancient of the living lineages of ray-finned fishes, the Polypterus bichirs share traits such as paired lungs with both modern amphibians and very early four-limbed vertebrates.
The species grouped as "appeared" in this study are those that were reported for the first time in the reservoir namely: Brienomormyrus brachyistius, Campylomormyrus tamandua, Heterobranchus longifilis, Polypterus endlicheri and Schilbe intermedius.