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Checklist for Order Eurypterida Burmeister, 1843 (Eurypterids)
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
 


List of families for West USA
5 Families width 6 Species
Stylonuridae Diener, 19241SpeciesTaxom
Eurypteridae De Kay, 18251SpeciesTaxom
Hardieopteridae Tollerton, 19891SpeciesTaxom
Pterygotidae Clarke & Rue..., 19123SpeciesTaxom
Mycteroptidae Cope, 18860SpeciesTaxom


Genera for West USA
6 Genera with 6 Species
Dorfopterus Kjellesvig-W..., 19551SpeciesTaxom
Erieopterus Kjellesvig-W..., 19351SpeciesTaxom
Hallipterus Kjellesvig-W..., 19631SpeciesTaxom
Jaekelopterus Waterston, 1964
0SpeciesTaxom
Mycterops Cope, 1886
0SpeciesTaxom
Pterygotus Agassiz, 19343SpeciesTaxom


Species list for West USA
6 Species
Dorfopterus angusticollis ♰ Kjellesvig-W..., 1955
Erieopterus latus ♰ Ruedemann, 1935
Hallipterus lacoanus ♰ E.N. Kjelles..., 1963
Pterygotus (Pterygotus) howelli ♰
Pterygotus (Pterygotus) montanensis ♰
Pterygotus princetonii Ruedemann, 1934

Subnodes of Eurypterida with occurrences in West USA
SuborderStylonurina ♰
Diener, 1924
3
3
2		Families
Genera
Species
Taxom

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

FamilyEurypteridae ♰
De Kay, 1825
1
1		Genus
Species
Taxom



Links, sources and further information
Eurypterida at irmng.org