Arthropods are segmented animals possessing an external, articulated skeleton. It is the most diversified group of animals. The terrestrial arthropod collection group is made up of insects, arachnids and myriapods. The Onychophora collection is connected to it. With over 40,000,000 specimens, in terms of numbers it accounts for over half of the collections at the Muséum national d’Histoire naturelle.