This article was originally published on Critter Science.

Surviving for around 450 million years, the horseshoe crab has changed little over the millions of years. Hence they are known as living fossils. They get their name from the shape of their carapace. Horseshoes are not true crabs, nor even crustaceans; although they are a subdivision of arthropods. These […]

Thanks for reading! Follow Critterman for more updates and insights.