Family Planorbidae
Planorbidae is a family in the order Hygrophila. Browse 5 named species recorded in this family, or open an individual profile for its available identification and natural-history information.
Species in Planorbidae (5)
River Limpet
Ancylus fluviatilis
3-8mm. Ancylus fluviatilis is a species of very small, freshwater, air-breathing limpet, the shell has a conical, backwardly directed apex. Oval to round. It is fairly dull brown to black in colour and shows fine growth lines. The Lake Limpet, A. lac
Twisted Ramshorn
Bathyomphalus contortus
Up to 6mm and 2mm thick with numerous tight whorls and an crescent-shaped aperture which partly wraps around the last whorl. It is noticeable concave on one side and more or less flat on the other. The shell has a rounded edge profile and has radial
White Ramshorn
Gyraulus albus
4-7mm diameter. This small ramshorn snail has a strong, white, chalky shell with spiral , as well as radial, striations.The round mouth bends away from the main whorls at an obtuse angle. Found in both rivers and larger reservoirs, sometimes in small
Nautilus Ramshorn
Gyraulus crista
2-3.5mm. This small ramshorn snail is often overlooked due to its small size. It has rapidly expanding whorls and and oval mouth aperture. The shell can have strong, curved radial ridges but these are variable so not always very obvious. From the und
Margined Ramshorn
Planorbis planorbis
Shell size: 9-18mm, height: 2.5-4 mm. A rather thick and strong shell. It is not glossy and it has a paler keel towards the periphery, past the mid-line but not right at the edge. There are 5 or 6 whorls which increase regularly in size. The mouth ma