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Checklist for Infraorder Palaeosterni Stockwell, 1989
and region Northwestern Illinois (Northern Illinois, Illinois, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		92
274
562		Families
Genera
Species		 
Taxom
 

Subclass
 		Dromopoda
Shultz, 1990
14
23
33		Families
Genera
Species		 
Taxom
 

Order
 		Scorpiones
C. L. Koch, 1837
Scorpion, Scorpions		4
7
7		Families
Genera
Species		 
Taxom
 

Suborder
 		Neoscorpionina
Thorell & Lindström, 1885
3
6
6		Families
Genera
Species		 
Taxom
 

Infraorder
 		Palaeosterni ♰
Stockwell, 1989
0
1
1		Families
Genus
Species		 
Taxom