Click below for pages on arthropods and related lineages:
Onychophora: velvet worms
Tardigrada: water bears
Arthropoda: arthropods
Euarthropoda: crown arthropods
Leanchoiliida: great-appendage arthropods
Pycnogonida: sea-spiders
Euchelicerata: arachnids
Scorpiones: scorpions
Opiliones: harvestmen
Cyphophthalmi: mite-like harvestmen
Palpatores: long-legged harvestmen
Insidiatores: southern short-legged harvestmen
Sandokanidae: stump-legged harvestmen
Gonyleptoidea
Pyramidopidae
Assamiidae
Zalmoxoidea
Samooidea
Pseudoscorpiones: pseudoscorpions
Solifugae: sun spiders
Parasitiformes: parasitiform mites
Mesostigmata
Trigynaspida
Uropodina: turtle mites
Gamasina
Ixodida: ticks
Halacaridae: sea mites
Parasitengonina
Erythraeoidea
Hydrachnidia: water mites
Trombidioidea
Anystina
Alycidae
Beetle mites
Palaeosomata
Brachychthoniidae
Hypochthonioidea
Holonota
Epilohmanniidae
Hermanniidae
Astigmatina: dust mites
Malaconothridae
Trhypochthoniidae
Nanhermanniidae
Crotoniidae
Nothridae
Plateremaeoidea
Eutegaeidae
Anderemaeidae
Carabodoidea
Rhynchoribatidae
Oppioidea
Eremaeoidea
Neoliodidae
Hermannielloidea
Cymbaeremaeidae
Gustavioidea
Damaeidae
Cosmochthonioidea
Mesoplophoridae
Ricinulei
Trigonotarbida
Tetrapulmonata (further table of contents)
Artiopoda: trilobites and relatives
Myriapoda: centipedes and millipedes
Hymenocarina
Euthycarcinoidea
Oligostraca: ostracods and fish lice
Allotriocarida: insects and relatives (further table of contents)
Tantulocarida: tantulocaridans
Thecostraca: barnacles
Copepoda: copepods
Malacostraca: higher crustaceans (further table of contents)