†family Leaiidae Raymond 1949 (clam shrimp)
Branchiopoda - Diplostraca - Leaiidae
Parent taxon: Conchostraca according to J.-C. Gall 1971
Sister taxa: Cycloconchoididae, Estheria, Eustheria, Fushunograptiidae, Isauridae, Leaiina, Limnadopsidae, Sphaerestheria, Ulugkemia
Ecology: slow-moving nektobenthic suspension feeder-detritivore
Distribution:
• Triassic of France (1 collection)
• Permian of Antarctica (1)
• Carboniferous of Canada (3: Nova Scotia), Germany (25)
Total: 30 collections including 38 occurrences