The image shows four different types of clams on a black background with the text "Unio Contractus Lea, 1857 USNM 86102" written on them.
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The image shows four different types of clams on a black background with the text "Unio Contractus Lea, 1857 USNM 86102" written on them. The clams are arranged in a triangular formation, with the largest clams in the center and two smaller clams surrounding it. The text is written in white and is clearly visible against the dark background.
