Who’s up for a game of hide-and-seek this Trilobite Tuesday? Pictured is Arctinurus boltoni, a 420-million-year-old trilobite from the Rochester Shale Quarry of New York. It’s preserved alongside a crinoid—a marine organism that used feather-like arms to catch drifting food particles. Though they resemble plants, crinoids are actually animals.
The proximity of these two ancient organisms, frozen together in time, makes for some interesting speculation. Could this trilobite have been hiding behind a crinoid? And if so, why?
