Norrisia Bayle 1880 (top snail)

Gastropoda - Trochoidea - Trochidae

Parent taxon: Trochidae according to K. V. Palmer and D. C. Brann 1965

See also Sepkoski 2002

Sister taxa: Aaleniella, Anticonulus, Antisolarium, Buckmanina, Calliostomatinae, Canthardinae, Chlorostoma, Chuelskia, Cirsostylus, Cittarium, Cochleochilus, Coeloconulus, Coralastele, Enida, Eocalliostoma, Eucyclinae, Francisciconcha, Gena, Granulifera, Halistylinae, Hybochelus, Karabolkia, Lirulariinae, Lithotrochus, Livona, Margarella, Margaritinae, Microgaza, Monodontinae, Parvitomella, Phorcus, Prothalotia, Serratotrochus, Solariconulus, Solariellinae, Stelzneria, Stomatellinae, Suavotrochus, Synaptocochlea, Thalotia, Trochaclididae, Trochaclis, Trochinae, Trochotectus, Trochus, Turcicula, Umboniinae, Vacekia, Eostomias, Stomatiinae

Subtaxa: none

Ecology: epifaunal grazer

Distribution:

• Quaternary of Mexico (15 collections), United States (3: California)

• Eocene of United States (6: Alabama, Mississippi, Texas)

• Paleocene of Nigeria (1)

Total: 25 collections including 28 occurrences

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Specimen images are retrieved through the ePANDDA API.


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