Williamia Monterosato 1884 (pulmonate)
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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 Williamia peltoides
Ecology: facultatively mobile epifaunal grazer
Distribution:
• Quaternary of Ecuador (1 collection), Italy (1), New Zealand (1), United States (7: California)
• Pliocene of Jamaica (1)
• Miocene of France (1), Italy (1)
• Oligocene of France (1)
Total: 14 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.