A genus of freshwater snails (pond snails) characterized by a rounded shell in the form of a plane spiral; †a snail of this genus (obsolete).
| 单词 | θ32916 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > order Pulmonifera > Inoperculata > family Limnaeidae or Planorbidae > genus Planorbis (3) Planorbis1769 A genus of freshwater snails (pond snails) characterized by a rounded shell in the form of a plane spiral; †a snail of this genus (obsolete). Subcategories:— member of (2) |
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