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Checklist for Suborder Ptychopariina Richter, 1932
and region Placer County (Eastern California, California, USA)


Class
 		Trilobita ♰
Walch, 1771
Trilobites		14
24
12		Families
Genera
Species		 
Taxom
 

Order
 		Ptychopariida ♰
Swinnerton, 1915
2
6
6		Families
Genera
Species		 
Taxom
 

Suborder
 		Ptychopariina ♰
Richter, 1932
2
6
6		Families
Genera
Species		 
Taxom
 


List of families for Placer County
2 Families width 6 Species
Alokistocaridae Resser, 19394SpeciesTaxom
Ptychopariidae Matthew, 18872SpeciesTaxom


Genera for Placer County
6 Genera with 6 Species
Amecephalus Walcott, 19521SpeciesTaxom
Mexicella LOCHMAN, 19163SpeciesTaxom
Onchocephalites Rasetti, 1957
0SpeciesTaxom
Pachyaspis Resser, 1939
0SpeciesTaxom
Plagiura Resser, 19791SpeciesTaxom
Volocephalina PALMER, 19791SpeciesTaxom


Species list for Placer County
6 Species
Amecephalus arrojosensis ♰ LOCHMAN, 1952
Mexicella mexicana ♰ LOCHMAN, 1948
Mexicella robusta ♰ SUNDBERG & M..., 2000
Mexicella stator ♰ Walcott, 1916
Plagiura minor ♰ Palmer, 1979
Volocephalina connexa ♰ Palmer, 1979

Subnodes of Ptychopariina with occurrences in Placer County
SuperfamilyPtychoparioidea ♰
Matthew, 1887
2
6
6		Families
Genera
Species
Taxom