Osteoglossomorpha

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Osteoglossomorpha is a group of bony fish in the Teleostei.

Notable members

A notable member is the arapaima (Arapaima gigas), the largest freshwater fish in South America and one of the largest bony fishes alive. Other notable members include the bizarre freshwater elephantfishes of family Mormyridae.

Systematics

Most osteoglossomorph lineages are extinct today. Only the somewhat diverse "bone-tongues" (Osteoglossiformes) and two species of mooneyes (Hiodontiformes) remain. The ichthyodectiform fishes from the Jurassic and Cretaceous periods were once classified as osteoglossomorphs, but are now generally recognized as stem teleosts. Basal and incertae sedis (Extinct) Order †Lycopteriformes Chang & Chou 1977 Order Hiodontiformes McAllister 1968 sensu Taverne 1979 Order Osteoglossiformes Regan 1909 sensu Zhang 2004

Phylogeny

Phylogeny based on the following works:

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