Order Pharyngobdellida Johansson 1913 

 Phylum Poeobioidea Fisher 1946 

 Phylum Echiuroidea Sedgwick 1898 

 Class Echiurida Savigny 1817 

 Order Echiuroinea Bock 1942 

 Order Xenopneusta Fisher 1946 

 Order Heteromyota Fisher 1946 

 Class Saccosomatida Fisher 1946 

 Phylum Sipunculoidea Sedgwick 1898 

 Phylum Onychophora Grube 1851 

 Phylum Arthropoda Siebold & Stannius 1845 

 Subphylum *Trilobita Schlotheim 1820 

 Class *Hypoparia Beecher 1897 

 Class *Opisthoparia Beecher 1897 

 Class *Proparia Beecher 1897 

 Subphylum Chelicerata Dahl 1913 

 Class Merostomata Woodward 1878 

 Order *Eurypterida Woodward 1878 

 Order *Synxiphosura Packard 1885 

 Order Xiphosura Latreille 1806 

 Class Pycnogonida Latreille 1804 

 Order Colossendeomorpha Cole 1905 

 Order Nymphonomorpha Pocock 1904 

 Order Ascorhynchomorpha Pocock 1904 

 Order Pycnogonomorpha Pocock 1904 

 Class Arachnida Lamarck 1815 

 Subclass Latigastra Petrunkevitch 1946 

 Order Scorpiones Latreille 1810 

 Order Pseudoscorpiones Latreille 1810 

 Order Opiliones Sundevall 1833 

 Order *Architarbi Petrunkevitch 1946 

 Order Acari Leach 1817 



Suborder Notostigmata With 1903 

 Suborder Holothyroidea Reuter 1909 

 Suborder Parasitiformes Reuter 1909 

 Suborder Trombidiformes Reuter 1909 

 Suborder Sarcoptiformes Reuter 1909 

 Suborder Tetrapodili Bremi 1872 

 Subclass Stethostomata Petrunkevitch 1948 

 Order *Haptopoda Pocock 1911 

 Order *Anthracomarti Karsh 1882 

 Subclass Soluta Petrunkevitch 1948 



Order Trigonotarbi Petrunkevitch 1948 

 Subclass Caulogastra Pocock 1910 



Superorder Latisterna Petrunkevitch 1948 



Order Palpigradi Thorell 1888 



Superorder Camarostomata Petrunkevitch 1948 



Order Schizomida Ptrunkevitch 1913 



Order Telyphonida 



Order Kustarachnae Petrunkevitch 1913 



Superorder Labellata Petrunkevitch 1948 



Order Phrynichida Petrunkevitch 1946 



[12] 



