Figure 2 from Schejter and Mantellato 2011—Examples of shell-like structures constructed by zoanthids. The shape of the colony seems to be slightly different depending on the shape of the snail. Scale ...

Researchers analyzed photographs of the crustaceans online, identifying nearly 400 examples of artificial shells, which were often plastic bottle caps. Christian Thorsberg - Correspondent.

Experiments on 160,000-year-old clam shell fossils in northern caves indicate they are earliest examples of shell beads strung for display on the human body, Israeli scientists say ...

It's possible that a clam shell scratched by Homo erectus — an early hominid — might be our oldest-ever example of artistic work. Or just a thoughtless doodle. The shell, which was found in ...