Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Class Merostomata - Horseshoe Crabs

Atlantic horseshoe crab - Limulus polyphemus - male - female Eurypterus remipes
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Merostomata (Horseshoe Crabs)
One North American species, Limulus polyphemus.
In addition to the order Xiphosura, which includes the horseshoe crabs, this class includes the extinct order Eurypterida, known as sea scorpions.
Internet References