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Checklist for Subfamily Mesonacinae
and region West USA (USA)


Class
 		Trilobita ♰
Walch, 1771
Trilobites		131
761
1351		Families
Genera
Species		 
Taxom
 

Order
 		Redlichiida ♰
Richter, 1932
9
36
62		Families
Genera
Species		 
Taxom
 

Suborder
 		Olenellina ♰
Walcott, 1890
6
33
59		Families
Genera
Species		 
Taxom
 

Superfamily
 		Olenelloidea ♰
Walcott, 1890
2
19
51		Families
Genera
Species		 
Taxom
 
FamilyOlenellidae ♰
Walcott, 1890
10
36		Genera
Species		 
Taxom
 
SubfamilyMesonacinae ♰
1
0		Genus
Species		 
Taxom
 


Genera for West USA
1 Genera with 0 Species
Mesonacis Walcott, 1885
0SpeciesTaxom