Public domain photos

The image shows a group of six shells from the Asthenotherus hemphillii dall, a type of shell found in the United States, against a black background. The shells are arranged in a line, with text and numbers visible on the right side of the image.

The image shows a group of six shells from the Asthenotherus hemphillii dall, a type of shell found in the United States, against a black background. The shells are arranged in a line, with text and numbers visible on the right side of the image.Open in library