"Fossil" Fred Hotchkiss inspects clam fossils.
Duncan Caldwell talks to visitors at his booth at Fossil Day.
Matheo Gomes leans in close to inspect a fossil.
Zoe Tucker holds fossilized remains at the MV Museum table.
Nicholas Gomes reacts to a demonstration at the MV Museum table. Matheo Gomes, center, and Leigha D'Antonia, right, also participate.
Duncan Caldwell narrates a story of human evolution using ancient tools and technology discovered around the world.
Dylan Fondren, 9, listens to Duncan Caldwell, right, talk about an ancient tool used by humans thousands of years ago.
Esme Hedin uses her powers of perception to inspect a fossil with a microscope.
Lilli Claussen holds up a 300 million year old collection of brachiopods found in Pennslyvania.
Jacon and Ssam Gurney of Oak Bluffs found this fragment of whale spine in Aquinnah.