Bivalvia - Solemyida - Manzanellidae
Synonym: Huxleyidae Scarlato and Starobogatov 1971
Parent taxon: Manzanelloidea according to E. V. Coan and P. Valentich-Scott 2012
See also Bieler and Mikkelsen 2006, Bouchet et al. 2010, Carter et al. 2011, Coan et al. 2000, Mikkelsen and Bieler 2008, Nevesskaja 2009, Newell 1965, Parker 1982, Spencer et al. 2004 and Vokes 1980
Sister taxon: Nucinellidae
Subtaxa: Huxleyia Manzanella Posterodonta
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of United States (5: California collections)
• Pliocene of Italy (1)
• Miocene of United States (1: Vermont)
• Eocene of the Russian Federation (1)
• Permian of United States (11: Arizona, Nevada, New Mexico)
Total: 19 collections each including a single occurrence