The image shows a group of margarites heliconius excavatus dall, a type of sea shell, against a black background.
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The image shows a group of margarites heliconius excavatus dall, a type of sea shell, against a black background. The shells are arranged in a symmetrical pattern, with the largest shell in the center and two smaller shells on either side. The text at the top of the image reads "Margarites Heliconius Excavatus Dall, 1919".