The image shows a group of four clams on a black background with the words "Unio trinacrus lea, 1861" written on them.
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The image shows a group of four clams on a black background with the words "Unio trinacrus lea, 1861" written on them. The clams are arranged in a cluster, with the largest clams in the center and two smaller clams surrounding it. The shells are a light brown color with a glossy sheen, and the text is written in a bold white font.
