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Checklist for Suborder Cheirurina Harrington, 1957
and region Ordovician (Paleozoic)


Class
 		Trilobita ♰
Walch, 1771
Trilobites		90
824
1708		Families
Genera
Species		 
Taxom
 

Order
 		Phacopida ♰
Salter, 1864
16
201
424		Families
Genera
Species		 
Taxom
 

Suborder
 		Cheirurina ♰
Harrington, 1957
6
116
262		Families
Genera
Species		 
Taxom
 


List of families for Ordovician
6 Families width 262 Species
Cheiruridae Salter, 186461SpeciesTaxom
Encrinuridae Angelin, 185435SpeciesTaxom
Hammatocnemidae116SpeciesTaxom
Pilekiidae Sdzuy, 19555SpeciesTaxom
Pliomeridae Raymond, 191342SpeciesTaxom
Staurocephalidae3SpeciesTaxom

Subnodes of Cheirurina with occurrences in Ordovician
SuperfamilyCheiruroidea ♰
6
116
262		Families
Genera
Species
Taxom