Bivalvia - Cardiida - Lasaeidae
Synonyms: Leptonidae Gray 1847, Scacchiidae Récluz 1869
Parent taxon: Galeommatoidea according to J. G. Carter et al. 2011
See also Beu et al. 1990, Bouchet et al. 2010, Coan et al. 2000, Glenn 1904, Hickman 2015, Nevesskaja 2009, Newell 1965, Rosenberg 2005, Vokes 1980 and Ward and Blackwelder 1987
Sister taxa: Ephippiodontidae, Galeommatidae
Subtaxa: Aligena Anomalokellia Borniinae Cymatioa Diarmaidia Isorobitella Kellia Kurtiella Lasaea Lepton Neaeromya Orobitellinae Phascoliophila Properycina Rhamphidonta Scacchia Temblornia Thecodontinae Vermitexa Vermitexta
Ecology: stationary infaunal suspension feeder
Distribution:
• Quaternary of Argentina (3 collections), Australia (1), Ecuador (3), France (1), Japan (2), Mexico (10), Morocco (1), the Netherlands (5), Poland (2), Turkey (2), the United Kingdom (10), United States (41: Alaska, California, Louisiana, Maryland, Massachusetts, New Jersey, North Carolina, South Carolina)
• Pliocene of Australia (1), Belgium (6), Indonesia (1), Jamaica (1), Panama (1), the United Kingdom (4), United States (8: California, North Carolina, South Carolina, Virginia)
• Miocene of Australia (2), Belgium (10), Bulgaria (1), Denmark (1), Ecuador (1), France (1), Germany (8), Italy (2), the Netherlands (2), Panama (3), Poland (1), United States (22: Florida, Maryland, Nebraska)
• Oligocene of France (1), Germany (1)
• Eocene of France (1), New Zealand (2), the United Kingdom (1), United States (8: Alabama, California, Mississippi, Oregon, Texas)
• Paleocene of Belgium (1)
Total: 172 collections including 228 occurrences