It's Trilobite Tuesday! Rarely exceeding 1 in (2.5 cm) in length—including its long, graceful tail spine—the small Middle Cambrian ptychopariid trilobite Norwoodia bellaspina hails from Utah’s Weeks Formation. It takes a sharp eye to spot one in the field.
American Museum of Natural History
@AMNH #Trilobite #museums #fossils
