A bivalve mollusk shell.
William & Robert Chambers Encyclopaedia - A Dictionary of Universal Knowledge for the People (Philadelphia, PA: J. B. Lippincott & Co., 1881)
TIFF (full resolution)
2184×2400, 1.3 MiB
Large GIF
931×1024, 185.5 KiB
Medium GIF
582×640, 99.0 KiB
Small GIF
291×320, 35.1 KiB