Rhynchonellata - Athyridida - Diplospirellidae
Alternative combinations: Spirigera trigonella, Terebratulites trigonellus
Belongs to Tetractinella according to J. Palfy 2003
See also Bittner 1890, Dagys 1974, Grunt 1986, Iordan 1993, Siblík 1991 and Torti and Angiolini 1997
Sister taxa: Tetractinella didymoctenia, Tetractinella dyactis, Tetractinella quadricostata, Tetractinella tetractis
Ecology: stationary low-level epifaunal suspension feeder
• Triassic of Austria (6 collections), Croatia (2), Germany (1), Hungary (15), Iran (1), Italy (18), Poland (3), Romania (1), the Russian Federation (1), Serbia and Montenegro (4), Slovakia (2)
Total: 54 collections each including a single occurrence
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Specimen images are retrieved through the ePANDDA API.
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