Bivalvia - Cardiida - Lasaeidae
Synonym: Scacchiidae Récluz 1869
Parent taxon: Galeommatoidea according to J. G. Carter et al. 2011
See also Bouchet et al. 2010, Coan et al. 2000, Hickman 2015 and Ward and Blackwelder 1987
Sister taxa: Ephippiodontidae, Galeommatidae, Leptonidae
Subtaxa: Aligena Borniinae Cymatioa Diarmaidia Isorobitella Kellia Kurtiella Lasaea Neaeromya Orobitellinae Phascoliophila Rhamphidonta Scacchia Thecodontinae
Ecology: stationary infaunal suspension feeder
Distribution:
• Quaternary of Argentina (3 collections), Australia (1), Ecuador (3), France (1), Japan (1), Mexico (10), Morocco (1), the Netherlands (5), Poland (2), Turkey (2), the United Kingdom (7), United States (41: Alaska, California, Louisiana, Maryland, Massachusetts, New Jersey, North Carolina, South Carolina)
• Pliocene of Belgium (6), Indonesia (1), Jamaica (1), Panama (1), the United Kingdom (3), United States (7: California, North Carolina, South Carolina, Virginia)
• Miocene of Belgium (10), Germany (7), Italy (1), the Netherlands (2), Poland (1), United States (20: Florida, Maryland, Nebraska)
• Oligocene of France (1), Germany (1), United States (2: Washington)
• Eocene of New Zealand (2), the United Kingdom (1), United States (7: Alabama, California, Mississippi, Oregon, Texas)
Total: 151 collections including 186 occurrences