caption: The image shows a group of four different types of shells on a black background, with the text "Parapholyx effusa dalli baker, 1945" at the top. The shells are arranged in a symmetrical pattern, with each shell having a unique shape and texture. The colors of the shells range from light to dark, with some having a glossy finish. The text is written in a bold, white font, making it stand out against the dark background.