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Checklist for Infraorder Palaeosterni Stockwell, 1989
and region Middle Pennsylvanian (Upper Carboniferous)


Class
 		Arachnida
Lamarck, 1801
Arachnids		45
90
141		Families
Genera
Species		 
Taxom
 

Subclass
 		Dromopoda
Shultz, 1990
19
28
49		Families
Genera
Species		 
Taxom
 

Order
 		Scorpiones
C. L. Koch, 1837
Scorpion, Scorpions		13
20
29		Families
Genera
Species		 
Taxom
 

Suborder
 		Neoscorpionina
Thorell & Lindström, 1885
1
5
5		Family
Genera
Species		 
Taxom
 

Infraorder
 		Palaeosterni ♰
Stockwell, 1989
0
3
3		Families
Genera
Species		 
Taxom