Parent taxon: Nuculoida according to L. W. Ward and B.W. Blackwelder 1987
See also Bieler and Mikkelsen 2006, Bouchet et al. 2010, Carter et al. 2011, Coan et al. 2000, Coan and Valentich-Scott 2012, Cope 1997, Dockery 1982, Fang 2006, Fang and Cope 2004, Giribet and Wheeler 2002, Glenn 1904, Gliozzi and Malatesta 1983, Grant, IV and Gale 1931, Harrison and Harrison 1975, Huber 2010, Islamoglu and Taner 1995, Maxwell 1992, Mikkelsen and Bieler 2008, Nevesskaja 2009, Newell 1965, Ride et al. 1999, Squires 1984, Squires 1987, Stilwell and Zinsmeister 1992, Stilwell et al. 2004, Todd 2001 and Vokes 1980
Sister taxa: Cardiolariidae, Clinopista, Cnestriella, Ctenodontoidea, Dysondonta, Eonuculoma, Eritropsis, Iheringinucula, Kasachia, Leiodysodonta, Lepteviella, Menneroctenia, Neiloides, Nuculoidea, Paleostraba, Phaseoloidea, Phestioides, Pristiglomoidea, Pseudoleda, Pseudonuculana, Scyphoconcha, Xiaoshuisulcna, Zechania
Subtaxa: none
Ecology: slow-moving infaunal deposit feeder
Distribution:
• Jurassic of the United Kingdom (3 collections)
• Ordovician of the United Kingdom (4)
Total: 7 collections each including a single occurrence