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

Scurrying across the earth, a 110-pound, nine-foot-long creature called Arthropleura ranks as the largest arthropod to ever ...

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

In a new study published in the Journal of Systematic Palaeontology, Harvard researchers in the Department of Organismic and Evolutionary Biology, formally describe Helmetia expansa, offering new ...

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 ...