Help Identifying Freshwater Bivalves (mussels?)

[The Masked Shadow]

Species #1 looks like a Sharkfin Mussel

 

[DirtyPaws949]

Species #1 looks like a Sharkfin Mussel

Good ID! The seller got back to me with the same response, so specimen #1 has been positively identified (common and scientific names).
Specimen #2 has its family narrowed down (Unionidae), but the species is still unknown.

 

[The Masked Shadow]

Good ID! The seller got back to me with the same response, so specimen #1 has been positively identified (common and scientific names).
Specimen #2 has its family narrowed down (Unionidae), but the species is still unknown.

Oops. Didn’t read the thread.