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Planorbarius corneus is the largest European species of ramshorn snail (family Planorbidae), with a shell typically measuring 35 millimetres (1.4 in) across when fully-grown. [ 4 ] The 10–17 by 22–40 millimetres (0.39–0.67 by 0.87–1.57 in) coiled shell has between 3 and 4.5 rounded whorls with deep sutures , the last whorl predominating.
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin . [ 3 ]
Red ramshorn snail. Most of these snails are of the family Planorbidae, and they include the species Planorbarius corneus.There are two different coloured skin forms: black and red; the latter lack the dark skin pigment melanin and consequently have a bright reddish skin, which is the colour of their blood.
Planorbella duryi, common name the Seminole rams-horn, is a species of air-breathing freshwater snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails. The species is endemic to Florida and is found frequently in home aquariums.
The “magnificent ramshorn snail” — larger and rarer than the common ramshorn, of course — hasn’t been seen in the wild in decades. Will endangered species status help this NC snail with ...
Planorbella magnifica, the magnificent ramshorn, is a species of small, freshwater, air-breathing snail, a pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails. This species is endemic to the United States .
Lower image: Umbilical view; this side is carried uppermost in the living snail. This species, like all planorbids, has a sinistral shell. The width of the shell is 15 – 20 mm. The keel on the periphery of the shell is near the edge closest to the spire side, which is carried downwards in life.
Planorbarius is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells. [2]