Rhynchonellata - Terebratulida - Angustothyrididae

Parent taxon: Angustothyrididae according to A. Williams et al. 2006

Sister taxa: Caucasothyris, Cubanothyris, Cystothyris, Paradoxothyris, Praeangustothyris, Praecubanothyris, Rhaetina

Subtaxa: Angustothyris angustaeformis, Angustothyris concava, Angustothyris ladina, Angustothyris raxana

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Ecology: stationary epifaunal suspension feeder