Strophomenata - Productida - Aulostegidae

Parent taxon: Echinosteginae according to A. Williams et al. 2000

Sister taxa: Archaiosteges, Baissalosteges, Echinosteges, Edriosteges, Girlasia, Howseia, Limbella, Sphenosteges, Spirisosium, Strophalosiella, Strophalosiina

Subtaxa: Xenosteges adherens, Xenosteges anomalus, Xenosteges magnus, Xenosteges minusculus, Xenosteges quadratus, Xenosteges trivialis, Xenosteges umbonatus

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Ecology: stationary low-level epifaunal suspension feeder