Osteoglossomorpha: Information from Answers.com

Osteoglossomorpha

Arapaima (Arapaima gigas)

Kingdom:	Animalia
Phylum:	Chordata
Superclass:	Osteichthyes
Class:	Actinopterygii
Subclass:	Neopterygii
Infraclass:	Teleostei
Superorder:	Osteoglossomorpha Greenwood, Rosen, Weitzman & Myers, 1966

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

Systematics

Specimen of the primitive bulldog fish Allothrissops

Most osteoglossomorph lineages are extinct today. Only the somewhat diverse "bone-tongues" (Osteoglossiformes) and two species of mooneyes (Hiodontiformes) remain.^[1]

Order Ichthyodectiformes Bardeck & Sprinkle, 1969 – bulldog fishes (Extinct)

Basal and incertae sedis (Extinct)
- Genus Chetungichthys Chang & Chou, 1977
- Genus Plesiolycoptera
- Genus Yanbiania
Family Hiodontidae – mooneyes

Basal and incertae sedis (Extinct)
- Genus Tanolepis
- Genus Xixiaichthys
- Family Huashiidae Chang & Chou, 1977
Suborder Notopteroidei
- Family Gymnarchidae
- Family Mormyridae – freshwater elephantfishes
- Family Notopteridae – featherbacks
- Family Ostariostomidae Schaeffer, 1949 (Extinct)
Suborder Osteoglossoidei
- Genus Eurychir (Extinct)
- Genus Genartina (Extinct)
- Genus Musperia (Extinct)
- Genus Phareoides Taverne, 1973 (Extinct)
- Genus Chauliopareion (Extinct)
- Genus Singida (Extinct)
- Family Heterotididae (formerly included in Osteoglossidae)
- Family Osteoglossidae – arowanas
- Family Pantodontidae – freshwater butterflyfishes
- Family "Phaerodutidae" (Extinct)

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