While several creatures that fall under the designation, such as spiders and insects that live under rocks, can often cause ...

For over a century, the Cambrian arthropod Helmetia expansa remained a mystery. Discovered by paleontologist Charles ...

They’re also one of the world’s largest arthropods, animals with no backbone, external skeletons, and multiple-jointed appendages. In this crab’s case, those appendages are its 10 legs.

In a new study published in the Journal of Systematic Palaeontology, Harvard researchers in the Department of Organismic and ...

Since the 1970s, populations of arthropods—a group of animals that includes exoskeleton-bearing critters such as insects, spiders, centipedes, and millipedes—in the Puerto Rican rainforest have ...

Early arthropods had limbs with a walking leg for ... us not only how these 508-million-year-old animals grew, but how big they could get," Losso said. "Our findings give a much fuller picture ...