superphylum Lobopoda
Snodgrass 1938 
phylum Onychophora
Grube 1853 
phylum Arthropoda
Siebold et Stannius 1848
subphylum Cheliceromorpha
subphyl. nov.
infraphylum Pycnogonida Latreille 1810, stat. nov. 
Pycnogonum
infraphylum Chelicerata Heymons 1901, stat. nov.
superclassis Xiphosurida
Latreille 1802, stat. nov.
superclassis Cryptopneustida
supercl. nov.
classis
Eurypterida Burmeister 1843
classis
Arachnida Latreille 1810
subphylum Gnathomorpha
subphyl. nov.
infraphylum Trilobitomorpha Størmer 1944, stat. nov.
classis
Trilobita Walsh 1771
classis
Trilobitodea Størmer 1959
infraphylum Mandibulata Snodgrass 1938
subterphylum Crustaciformia subterphylum nov.
classis
Cheloniellida Brioli 1933 Cheloniellon
classis
Crustacea Pennant 1777 
subterphylum Myriapodomorpha subterphylum nov.
superclassis Arthropleurida
Waterlot 1934 Arthropleura
superclassis Atelocerata
Heymons 1901
classis
Myriapoda Leach 1814
subclassis Collifera subcl. nov.
infraclassis Pauropoda Lubbock 1866, stat. nov.
infraclassis Diplopoda Blainville-Gervais 1844, st.n.
subclassis Atelopoda subcl. nov.
infraclassis Symphyla Ryder 1880, stat. nov.
infraclassis Chilopoda Leach 1814, stat. nov.
classis
Insecta Linnaeus 1758, s.s.
= Hexapoda Latreille 1825