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Checklist for Superfamily Trinucleioidea Delo, 1935
and region Southwestern Ontario (Southern Ontario, Ontario, Canada)


Class
 		Trilobita ♰
Walch, 1771
Trilobites		23
32
18		Families
Genera
Species		 
Taxom
 

Order
 		Asaphida ♰
Salter, 1864
2
4
6		Families
Genera
Species		 
Taxom
 

Suborder
 		Asaphina ♰
Fortey & Chatterton, 1988
2
4
6		Families
Genera
Species		 
Taxom
 

Superfamily
 		Trinucleioidea ♰
Delo, 1935
1
1
3		Family
Genus
Species		 
Taxom
 


List of families for Southwestern Ontario
1 Family width 3 Species
Trinucleidae Hawle & Corda, 18473SpeciesTaxom


Genera for Southwestern Ontario
1 Genera with 3 Species
Cryptolithus Green, 18323SpeciesTaxom


Species list for Southwestern Ontario
3 Species
Cryptolithus bellulus ♰ Ulrich, 1878
Cryptolithus recurvus ♰ Bassler, 1920
Cryptolithus tesselatus ♰ Green, 1832

Subnodes of Trinucleioidea with occurrences in Southwestern Ontario
FamilyTrinucleidae ♰
Hawle & Corda, 1847
1
3		Genus
Species
Taxom