Risella Gray 1847 (periwinkle)
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Gastropoda - Sorbeoconcha - Littorinidae
Parent taxon: Littorinidae according to W. Kiessling 2003
Sister taxa: Cenchritis, Dissochilus, Echinininae, Echinolittorina, Eulimene, Gouetina, Lacuninae, Laevilitorina, Laevilitorininae, Littoraria, Littorina, Littorininae, Melarhaphe, Mirolacuna, Neritrema, Nodilittorina, Peasiella, Praelittorina, Procancellaria, Risellopsis, Rissellinae, Tectariinae, Tectarius, Heterospira, Hallstadtia
Subtaxa: none
Ecology: epifaunal grazer
Distribution: found only at Saint-Vast-les-Mello, Barisseuse (Eocene of France)
Specimen images are retrieved through the ePANDDA API.
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