ammonites
Gyrineum Link 1807 (triton shell)

Gastropoda - Tonnoidea - Ranellidae

Synonyms: Apollon Montfort 1810, Gyrinella Dall 1924, Ranella (Apollon) Montfort 1810

Parent taxon: Ranellinae according to M. Harzhauser et al. 2009

Sister taxa: Ameranella, Crassicymatium, Gutturinium, Halgyrineum, Priene, Ranularia, Reticutriton, Septa, Turritriton

Subtaxa: Apollon morrisi, Gyrineum (Aspa), Gyrineum (Gyrineum), Gyrineum bituberculare, Gyrineum gwinae, Gyrineum gyrineum, Gyrineum verrucosum

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Ecology: epifaunal carnivore