Williamia Monterosato 1884 (pulmonate)

Gastropoda - Basommatophora - Siphonariidae

Parent taxon: Siphonariidae according to J. A. Todd 2001

See also Sepkoski 2002 and Woodring 1928

Sister taxa: Anisomyon, Siphonacmea, Siphonaria

Subtaxa: Williamia parva

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Ecology: facultatively mobile epifaunal grazer

Distribution:

• Quaternary of Ecuador (1 collection), Italy (1), New Zealand (1), United States (1: California)

• Pliocene of Jamaica (1)

• Miocene of France (1), Italy (1)

• Oligocene of France (1)

Total: 8 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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