arc-form pearly mussel
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English
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Naturalis_Biodiversity_Center_-_RMNH.MOL.327100_-_Epioblasma_arcaeformis_%28Lea%2C_1831%29_-_Unionidae_-_Mollusc_shell.jpeg/220px-Naturalis_Biodiversity_Center_-_RMNH.MOL.327100_-_Epioblasma_arcaeformis_%28Lea%2C_1831%29_-_Unionidae_-_Mollusc_shell.jpeg)
Noun
[edit]arc-form pearly mussel (plural arc-form pearly mussels)
- Epioblasma arcaeformis, an extinct species of freshwater mussel.
- Synonym: sugarspoon
arc-form pearly mussel (plural arc-form pearly mussels)