Protopterus
genus of fishes
Protopterus is the genus of four species of lungfish found in Africa. Protopterus is considered the sole genus in the family Protopteridae, which is grouped with Lepidosiren in the order Lepidosireniformes.
Taxonomy
The earliest fossils of the Protopteridae come from the Late Cretaceous (Campanian-Maastrichtian) of Sudan, but phylogenetic evidence indicates that it and Lepidosirenidae split at the very beginning of the Early Cretaceous, around 145 Ma. Together, their common ancestor diverged from the only other extant lungfishes in Neoceratodontidae during the Late Jurassic.
Some papers suggest grouping Protopterus and Lepidosiren together in the family Lepidosirenidae, as their Cretaceous divergence is relatively recent compared to the Carboniferous origins of other lungfish families. However, most taxonomic authorities retain them as distinct families.
Description
African lungfish are elongated, eel-like fishes with thread-like pectoral and pelvic fins. They have soft scales, and the dorsal and tail fins are fused into a single structure. They can either swim like eels or crawl along the bottom using their pectoral and pelvic fins. The largest species can reach about 200 cm (6.6 ft) in length.
“Protopterus” enters the record as genus of fishes. Crown Archives preserves that source wording while asking what Protopterus, genus and fishes can confirm, complicate or overturn.
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“Protopterus” is worth following because a concise public description often conceals a longer documentary argument. Here, Protopterus, genus and fishes provides the most credible route into that argument.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Aug 11, 2026. The linked authority identifier is Q386335. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Protopterus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.