butterfly clam
English
A butterfly clam
Noun
butterfly clam (plural butterfly clams)
- A species of mussel, Ellipsaria lineolata, that inhabits rivers in the southern United States
References
Ellipsaria lineolata on Wikipedia.Wikipedia 
Unionidae on Wikispecies.Wikispecies 
Ellipsaria lineolata on Wikimedia Commons.Wikimedia Commons
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