caption: The image shows a small shell, Mitridae ziba bacillus, from the National Museum of Natural History, sitting on top of a black surface next to a piece of paper with text on it. The shell is a light brown color with a curved shape and a pointed tip. It has a smooth, glossy texture and is slightly curved at the top. The paper has a white background with black text written on it, and the text is written in a neat, cursive font.