Superfamily Cyamioidea Philippi 1845 (clam)

Bivalvia - Cardiida

Alternative spelling: Cyamiacea

Parent taxon: Leptonidina according to J. G. Carter et al. 2011

See also Bieler and Mikkelsen 2006, Coan et al. 2000, Nevesskaja 2009, Rosenberg 2005, Vokes 1980 and Ward and Blackwelder 1987

Sister taxon: Galeommatoidea

Subtaxa: Basterotiidae Cyamiidae Galatheavalvidae Neoleptonidae Perrierinidae Sportellidae

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Ecology: facultatively mobile infaunal suspension feeder

Distribution:

• Quaternary of Argentina (4 collections), Ecuador (1), Japan (4), New Zealand (1), United States (28: California, Florida, North Carolina, South Carolina)

• Pliocene of Antarctica (1), Australia (1), Jamaica (1), the United Kingdom (1), United States (6: Florida, North Carolina, Virginia), Venezuela (1)

• Miocene of Australia (2), Austria (1), Colombia (2), France (1), Germany (1), the Netherlands (2), New Zealand (3), United States (27: Florida, New Jersey)

• Oligocene of United States (10: Mississippi)

• Eocene to Oligocene of United States (1: Oregon)

• Eocene of Antarctica (3), Saudi Arabia (1), the United Kingdom (3), United States (6: Alabama, Texas)

• Paleocene of Belgium (1), United States (6: Alabama, Texas)

• Cretaceous of United States (2: South Dakota)

• Jurassic of United States (1: Nevada)

• Triassic of China (4), Italy (6), Svalbard and Jan Mayen (1)

• Permian of Pakistan (1)

Total: 134 collections including 176 occurrences

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