Valvata cristata

Systematics :

Kingdom: Animals (Animalia)
Phylum: Molluscs (Mollusca)
Class: Snails (Gastropoda)
Subclass: Prosobranchia
Order: Mesogastropoda
Family: Valvatidae
Genus: Valvata
Species: Valvata cristata

Norwegian name: Flat ferskvannsgjellesnegl