Organisms interact with their environment, and in many cases, they leave geological evidence. Seventy years ago, Emery noted and described amphipod burrows (sand fleas) in California beaches. He went on to suggest that the presence of comparable burrows in ancient successions “should be supplementary indications of a marine beach environment because they require a temporary drying of the beach such as occurs between tides.” Hmmm. As we end the summer beach season in the northern hemisphere, JSR PaperClips readers who visit the beach and are hassled by sand fleas may want to take this paper along to consider the geological significance of the things that annoy them.
v. 14, p. 26–28.