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Checklist for Superfamily Pterygotioidea Clarke & Ruedemann, 1912
and region West USA (USA)


Class
 		Merostomata
Woodward, 1866
Horseshoe crabs, Merostomates		8
11
11		Families
Genera
Species		 
Taxom
 

Order
 		Eurypterida ♰
Burmeister, 1843
Eurypterids, Sea scorpions		5
6
6		Families
Genera
Species		 
Taxom
 

Superfamily
 		Pterygotioidea ♰
Clarke & Ruedemann, 1912
1
2
3		Family
Genera
Species		 
Taxom
 


List of families for West USA
1 Family width 3 Species
Pterygotidae Clarke & Rue..., 19123SpeciesTaxom


Genera for West USA
2 Genera with 3 Species
Jaekelopterus Waterston, 1964
0SpeciesTaxom
Pterygotus Agassiz, 19343SpeciesTaxom


Species list for West USA
3 Species
Pterygotus (Pterygotus) howelli ♰
Pterygotus (Pterygotus) montanensis ♰
Pterygotus princetonii Ruedemann, 1934

Subnodes of Pterygotioidea with occurrences in West USA
FamilyPterygotidae ♰
Clarke & Ruedemann, 1912
2
3		Genera
Species
Taxom