Family: NUCINELLIDAE E. H. Vokes, 1956
(3-3-2-0-1-1-0-0-0-0-0-0-0) Ref. Bernard, 1983 p 9 Vaught, 1989 p 113 [=MANZANELLIDAE] Ref. Lindner, 1977 p 100 [see also under Subclass: Pteriomorpha; Order: Arcoida; Superfamily: LIMOPSACEA]