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Checklist for Order Phacopida Salter, 1864
and region Mercer County (Missouri, USA)


Class
 		Trilobita ♰
Walch, 1771
Trilobites		9
13
10		Families
Genera
Species		 
Taxom
 

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


List of families for Mercer County (Missouri)
4 Families width 4 Species
Calymenidae Burmeister, 18431SpeciesTaxom
Cheiruridae Salter, 18641SpeciesTaxom
Phacopidae Hawle & Corda, 18471SpeciesTaxom
Hammatocnemidae1SpeciesTaxom


Genera for Mercer County (Missouri)
5 Genera with 4 Species
Calymene Brongniart, 1822
0SpeciesTaxom
Ceraurus Green, 18321SpeciesTaxom
Eldredgeops STRUVE, 18321SpeciesTaxom
Flexicalymene SHIRLEY, 18411SpeciesTaxom
Sphaerexochus Beyrich, 18681SpeciesTaxom


Species list for Mercer County (Missouri)
4 Species
Ceraurus pleurexanthemus ♰ Green, 1832
Eldredgeops rana ♰ Green, 1832
Flexicalymene senaria ♰ Conrad, 1841
Sphaerexochus romingeri ♰ Hall, 1868

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

SuborderCheirurina ♰
Harrington, 1957
2
2
2		Families
Genera
Species
Taxom

SuborderPhacopina ♰
STRUVE, 1959
1
1
1		Family
Genus
Species
Taxom



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