Fig. 2
Diagram showing the best supported evolutionary relationships of the five arthropod groups: chelicerates (a) (here represented by an amblypygid arachnid), trilobites (b) (a member of the family Trinucleidae), myriapods (c) (scutigeromorph centipede S. coleoptrata), crustaceans (d) (a stomatopod or mantis shrimp), and insects (e) (a dragonfly)