Trigonotretidae is an extinct family of articulate brachiopods belonging to the order Spiriferida.

Trigonotretidae
Temporal range: Carboniferous–Permian [1]
Fossil of Neospirifer ravana from Greenland, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Brachiopoda
Class: Rhynchonellata
Order: Spiriferida
Suborder: Spiriferidina
Superfamily: Spiriferoidea
Family: Trigonotretidae
Schuchert, 1893

These stationary epifaunal suspension feeders lived in the Carboniferous and Permian periods, from 360.7 to 252.3 Ma.[1]

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