arthropod

A 508-million-year-old arthropod is thought to share a common ancestor with spiders and scorpions.

The oldest known amber-preserved arthropods have been discovered in Italy, dating back 230 million years ago to the Late Triassic.

The world’s deepest land-living animal, an arthropod called a springtail, has been found in Krubera-Voronja, the deepest known cave.