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Checklist for Family Ptychopariidae Matthew, 1887
and region Alaska (West USA, USA)


Class
 		Trilobita ♰
Walch, 1771
Trilobites		74
138
123		Families
Genera
Species		 
Taxom
 

Order
 		Ptychopariida ♰
Swinnerton, 1915
16
32
31		Families
Genera
Species		 
Taxom
 

Suborder
 		Ptychopariina ♰
Richter, 1932
15
31
31		Families
Genera
Species		 
Taxom
 

Superfamily
 		Ptychoparioidea ♰
Matthew, 1887
13
29
30		Families
Genera
Species		 
Taxom
 
FamilyPtychopariidae ♰
Matthew, 1887
5
6		Genera
Species		 
Taxom
 


Genera for Alaska
5 Genera with 6 Species
Antagmus Resser, 19681SpeciesTaxom
Onchocephalites Rasetti, 01SpeciesTaxom
Onchocephalus Resser, 19681SpeciesTaxom
Semisphaerocephalus Ivshin, 19681SpeciesTaxom
Spencella Rasetti, 19632SpeciesTaxom


Species list for Alaska
6 Species
Antagmus laminatus ♰ Palmer, 1968
Onchocephalites versilis ♰
Onchocephalus profectus ♰ Palmer, 1968
Semisphaerocephalus latus ♰ Palmer, 1968
Spencella acanthina ♰
Spencella montanensis ♰ Rasetti, 1963


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