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Temporal range: Devonian
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Clade: Eotetrapodiformes
Family: Tristichopteridae
Genus: Tristichopterus
Egerton, 1861
T. alatus
Binomial name
Tristichopterus alatus
Egerton, 1861

Tristichopterus is a genus of prehistoric lobe-finned fish which lived during the Devonian period. Tristichopterus belongs to the family Tristichopteridae.

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Tristichopteridae Extinct family of fishes

Tristichopterids (Tristichopteridae) were a diverse and successful group of tetrapodomorph fishes living throughout the Middle and Late Devonian. They first appeared in the Givetian stage of the Middle Devonian. Within the group sizes ranged from a few tens of centimeters (Tristichopterus) to several meters.

<i>Eusthenodon</i> Extinct genus of fishes

Eusthenodon is an extinct genus of prehistoric tristichopterids from the Late Devonian period, ranging between 383 and 359 million years ago. They are well known for being a cosmopolitan genus with remains being recovered from East Greenland, Australia, Central Russia, South Africa, and Belgium. Compared to the other closely related genera of the Tristichopteridae clade, Eusthenodon was one of the largest lobe-finned fishes and among the most derived tristichopterids alongside its close relatives Cabonnichthys and Mandageria.