| Spanionematidae | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| (unranked): | cladeCaenogastropoda |
| Family: | Spanionematidae Golikov & Starobogatov, 1987 |
Spanionematidae is anextinct family of fossilsea snails,marinegastropodmolluscs in the cladeCaenogastropoda.[1]