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Checklist for Class Merostomata Woodward, 1866 (Horseshoe crabs)
and region West USA (USA)


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


List of families for West USA
8 Families width 11 Species
Bunodidae Packard, 18860SpeciesTaxom
Stylonuridae Diener, 19241SpeciesTaxom
Eurypteridae De Kay, 18251SpeciesTaxom
Hardieopteridae Tollerton, 19891SpeciesTaxom
Pterygotidae Clarke & Rue..., 19123SpeciesTaxom
Limulidae Leach, 1819Horseshoe Crab1SpeciesTaxom
Mycteroptidae Cope, 18860SpeciesTaxom
Paleolimulidae Raymond, 19441SpeciesTaxom


Genera for West USA
9 Genera with 11 Species
Bunodes Eichwald, 1854
0SpeciesTaxom
Dorfopterus Kjellesvig-W..., 19551SpeciesTaxom
Erieopterus Kjellesvig-W..., 19351SpeciesTaxom
Hallipterus Kjellesvig-W..., 19631SpeciesTaxom
Jaekelopterus Waterston, 1964
0SpeciesTaxom
Limulus Mueller, 17581SpeciesTaxom
Mycterops Cope, 1886
0SpeciesTaxom
Paleolimulus Dunbar, 19791SpeciesTaxom
Pterygotus Agassiz, 19343SpeciesTaxom


Species list for West USA
11 Species
Dorfopterus angusticollis ♰ Kjellesvig-W..., 1955
Erieopterus latus ♰ Ruedemann, 1935
Hallipterus lacoanus ♰ E.N. Kjelles..., 1963
Limulus polyphemus Linnaeus, 1758American Horseshoe Crab
Paleolimulus longispinus ♰ F. R. Schram, 1979
Pterygotus (Pterygotus) howelli ♰
Pterygotus (Pterygotus) montanensis ♰
Pterygotus princetonii Ruedemann, 1934

Subnodes of Merostomata with occurrences in West USA
OrderEurypterida ♰
Burmeister, 1843
Eurypterids, Sea scorpions		5
6
6		Families
Genera
Species
Taxom

OrderXiphosura
Latreille, 1802
Horseshoe crabs		3
4
3		Families
Genera
Species
Taxom



Links, sources and further information
Merostomata at artfakta.se
Merostomata at dyntaxa.se
Merostomata at gbif.org
Merostomata at irmng.org
Merostomata at itis.gov
Merostomata at marinespecies.org