Leukoma Römer 1857 (venus clam)

Bivalvia - Cardiida - Veneridae

Alternative spelling: Protothaca (Leukoma)

Synonyms: Ameghinomya Ihering 1907, Antinioche Olsson 1961, Chione (Ameghinomya) Ihering 1907, Colonche Olsson 1961, Nioche (Antinioche) Olsson 1961, Notochione Hertlein and Strong 1948, Paphia (Protothaca) Dall 1902, Protothaca Dall 1902, Protothaca (Antinioche) Olsson 1961, Protothaca (Notochione) Hertlein and Strong 1948, Protothaca (Tropithaca) Olsson 1961, Tropithaca Olsson 1961

Parent taxon: Venerinae according to E. V. Coan and P. Valentich-Scott 2012

See also Beu 2006, Coan et al. 2000, da Silva Forti 1969, Gordillo 1991, Griffin and Nielsen 2008, Hertlein 1972, Howe 1922, Ihering 1907, Oldroyd 1925, Sepkoski 2002, Todd 2001 and Woodring 1982

Sister taxa: Antigona, Artena, Callithaca, Chione, Chioneryx, Chionista, Chionopsis, Circomphalus, Clausinella, Dosina, Dosiniini, Globivenus, Humilaria, Iliochione, Irusella, Kuia, Marama, Melosia, Mercenaria, Paphonotia, Periglypta, Proxichione, Tapetini, Tawera, Turia, Venerini, Venus, Anomalocardia, Bassina, Placamen, Nioche, Timoclea, Austrovenus, Lirophora, Mclelannia

Subtaxa: Ameghinomya antiqua Ameghinomya coquandi Ameghinomya meridonalis Leukoma asperrima Leukoma beili Leukoma columbiensis Leukoma dolicha Leukoma ecuadoriana Leukoma grata Leukoma histrionica Leukoma lacinata Leukoma metodon Leukoma pertincta Leukoma staleyi Leukoma staminea Leukoma thaca Protothaca (Protothaca) Protothaca (Tropithaca) seymourensis

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Ecology: facultatively mobile infaunal suspension feeder

Distribution:

• Quaternary of Canada (1: British Columbia collection), Chile (1), Mexico (15), Panama (2), Peru (6), United States (22: California, Oregon, Washington)

• Pliocene to Pleistocene of United States (27: California)

• Pliocene of Chile (1), Ecuador (2), the Russian Federation (1), United States (14: California, Oregon)

• Miocene to Pliocene of United States (7: California)

• Miocene of Japan (4), Panama (2), the Russian Federation (3), United States (3: Alaska, California)

Total: 111 collections including 114 occurrences

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