Tergomya - Cyrtonellida - Cyrtonellidae

Full reference: E. Koken. 1897. Die Gastropoden des baltischen Untersilurs. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214

Parent taxon: Cyrtonellidae according to P. J. Wagner 2011

Sister taxon: Cyrtonella

Subtaxa: Isospira bucanioides, Isospira huttoni, Isospira lepida, Isospira nautilina, Isospira reinwaldti, Isospira reticulata

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Ecology: slow-moving low-level epifaunal grazer