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great ramshorn snail (Planorbarius corneus)
RAMSHORN SNAILS (Planorbarius corneus).
Date 1896
Source R. Lydekker (ed.) (1896). The royal natural history 6(section 12): page 352. http://www.archive.org/stream/royalnaturalhist612lyde#page/352/mode/1up
Author Unknown
Source: https://commons.wikimedia.org/wiki/File:Planorbarius_corneus_drawing.jpg
The great ramshorn snail (Planorbarius corneus) is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae. The shell of this species appears to be dextral in coiling, even though it is in fact sinistral or left-handed. |
