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Primary view of Potamilus purpuratus, Specimen #717
Britton, Joseph
July 20, 1974
Primary view of Potamilus purpuratus, Specimen #718
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #862
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #863
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #864
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #865
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #866
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #867
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #868
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #869
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #870
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #871
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #872
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #873
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #874
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #875
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #876
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #877
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #878
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #879
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #880
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #881
Britton, Joseph
July 20, 1974
Primary view of Pyganodon grandis, Specimen #882
Britton, Joseph
July 20, 1974
Primary view of Utterbackia imbecillis, Specimen #1380
Britton, Joseph
July 20, 1974
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