Bivalvia - Cardiida - Leptonidae
Parent taxon: Galeommatoidea according to G. Rosenberg 2005
See also Beu et al. 1990, Bouchet et al. 2010, Glenn 1904, Nevesskaja 2009, Newell 1965, Vokes 1980 and Ward and Blackwelder 1987
Sister taxa: Ephippiodontidae, Galeommatidae, Lasaeidae
Subtaxa: Anomalokellia Lepton Properycina Temblornia Vermitexa Vermitexta
Ecology: stationary infaunal suspension feeder
Distribution:
• Quaternary of Japan (1 collection), the United Kingdom (5), United States (2: Louisiana)
• Pliocene of Australia (1), the United Kingdom (1)
• Miocene of Australia (2), Bulgaria (1), Denmark (1), Ecuador (1), France (1), Germany (4), Italy (2), the Netherlands (1), Panama (3), United States (4: Florida)
• Eocene of France (1), United States (1: Alabama)
• Paleocene of Belgium (1)
Total: 33 collections including 35 occurrences