The horseshoe crab is known for its large protective shell and is a wonderful example of a living fossil, as it is a remnant of ancient arthropods dating back approximately 450 million years.ContentsFacts about the Horseshoe Crab The horseshoe crab specificationHorseshoe crab habitatHorseshoe Crab DietHorseshoe crab evolution and reproductionHorseshoe crab speciesFAQ Let’s learn more about it … Continue reading Horseshoe: The ancient marine creature that survived extinction 450 million years ago!