†order Praecardiida Newell 1965 (clam)
Parent taxon: Nepiomorphia according to P. Bouchet et al. 2010
Sister taxa: Cardioloidea, Praecardioidea
Subtaxa: none
Ecology: facultatively mobile epifaunal suspension feeder
Distribution: there are no occurrences of Praecardiida in the database