Scientists say that a series of marks carved onto a freshwater clam shell represent the earliest known engravings made by a human ancestor. The zigzag lines visible in the photo above probably were ...

A shell etched by Homo erectus is by far the oldest engraving ever found, challenging what we know about the origin of art and complex human thought THE artist – if she or he can be called that – was ...

NPR offers a correction to a piece earlier in the week in which we referred to the mollusk in the famous "Birth of Venus" painting by Botticelli as a clam shell. Now, a correction. On Tuesday, we ran ...

Dale Chihuly white Persian Seaform art glass set. 5 total pieces including 3 graduated clam shell form dishes and 2 sea urchin form bowls. 2 pieces signed and dated '91 and '94 on base.

From a surrealist view of a sea urchin's tooth to a trippy clamshell, the world's most stunning science images of the year have been released. The natural world is filled with gorgeous creatures, ...