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Checklist for Infraorder Orthosterni Pocock, 1911
and region USA (North America)


Class
 		Arachnida
Lamarck, 1801
Arachnids		545
2867
11767		Families
Genera
Species		 
Taxom
 

Subclass
 		Dromopoda
Shultz, 1990
82
354
1437		Families
Genera
Species		 
Taxom
 

Order
 		Scorpiones
C. L. Koch, 1837
Scorpion, Scorpions		26
79
260		Families
Genera
Species		 
Taxom
 

Suborder
 		Neoscorpionina
Thorell & Lindström, 1885
6
54
228		Families
Genera
Species		 
Taxom
 

Infraorder
 		Orthosterni
Pocock, 1911
6
51
226		Families
Genera
Species		 
Taxom
 


List of families for USA
6 Families width 226 Species and 18 Subspecies
Bothriuridae Simon, 18805SpeciesTaxom
Buthidae C. L. Koch, 1837Arrowbreasted scorpions56SpeciesTaxom
Chactidae Reginald Inn..., 1893Fatclaw scorpions1SpeciesTaxom
Hormuridae Laurie, 18967SpeciesTaxom
Scorpionidae Pierre André..., 1802Largeclaw scorpions19SpeciesTaxom
Vaejovidae Thorell, 1876136SpeciesTaxom

Subnodes of Orthosterni with occurrences in USA
SuperfamilyButhoidea
Koch, 1837
1
16
56		Family
Genera
Species
Taxom

SuperfamilyChactoidea
Pocock, 1893
1
1
1		Family
Genus
Species
Taxom

SuperfamilyScorpionoidea
Leach, 1815
3
13
31		Families
Genera
Species
Taxom

SuperfamilyVaejovoidea
Thorell, 1876
1
20
136		Family
Genera
Species
Taxom