horseshoe crabs

Dr. Tanacredi is a full professor at Molloy, teaching courses that include Ecology and Marine Biology. Before that, for 13
At just about 300 million years old, horseshoe crabs are about 200 million years older than the dinosaurs. This almost mythical
"I do see nature as wondrous, and I admit that’s a pretty old-fashioned attitude."
Hans Thewissen joins Josh and science enthusiast Eli to talk about why the horseshoe crab seems not to have evolved all that much.
Bruno Debattista, who attends Windmill Primary School in Oxford, England, came across the piece of shale rock last summer