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Checklist for Order Phacopida Salter, 1864
and region Butler County (Pennsylvania, USA)


Class
 		Trilobita ♰
Walch, 1771
Trilobites		27
35
15		Families
Genera
Species		 
Taxom
 

Order
 		Phacopida ♰
Salter, 1864
4
5
2		Families
Genera
Species		 
Taxom
 


List of families for Butler County (Pennsylvania)
4 Families width 2 Species
Cheiruridae Salter, 18641SpeciesTaxom
Calymenidae Burmeister, 18430SpeciesTaxom
Acastidae Delo, 19351SpeciesTaxom
Phacopidae Hawle & Corda, 18470SpeciesTaxom


Genera for Butler County (Pennsylvania)
5 Genera with 2 Species
Ceraurus Green, 18321SpeciesTaxom
Flexicalymene SHIRLEY, 1936
0SpeciesTaxom
Gravicalymene SHIRLEY, 1936
0SpeciesTaxom
Greenops Delo, 18371SpeciesTaxom
Phacops Emmrich, 1839
0SpeciesTaxom


Species list for Butler County (Pennsylvania)
2 Species
Ceraurus pleurexanthemus ♰ Green, 1832
Greenops boothi ♰ Green, 1837

Subnodes of Phacopida with occurrences in Butler County (Pennsylvania)
SuborderCalymenina ♰
Swinnerton, 1915
1
2
0		Family
Genera
Species
Taxom

SuborderCheirurina ♰
Harrington, 1957
1
1
1		Family
Genus
Species
Taxom

SuborderPhacopina ♰
STRUVE, 1959
2
2
1		Families
Genera
Species
Taxom



Links, sources and further information
Phacopida at gbif.org
Phacopida at irmng.org