Spanionematidae

Spanionematidae is an extinct family of fossil sea snails, marine gastropod molluscs in the clade Caenogastropoda.^[1]

Spanionematidae
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Caenogastropoda
Family:	Spanionematidae Golikov & Starobogatov, 1987

References

1. Bouchet, P. & Rocroi, J.-P. (2005). "Classification and Nomenclator of Gastropod Families". Malacologia. 47 (1–2).

• The Taxonomicon