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Checklist for Order Eurypterida Burmeister, 1843 (Eurypterids)
and region Ordovician (Paleozoic)


Class
 		Merostomata
Woodward, 1866
Horseshoe crabs, Merostomates		4
9
2		Families
Genera
Species		 
Taxom
 

Order
 		Eurypterida ♰
Burmeister, 1843
Eurypterids, Sea scorpions		2
4
1		Families
Genera
Species		 
Taxom
 


List of families for Ordovician
2 Families width 1 Species
Rhenopteridae Størmer, 19510SpeciesTaxom
Eurypteridae De Kay, 18250SpeciesTaxom


Genera for Ordovician
2 Genera with 1 Species
Brachyopterus Størmer, 1951
0SpeciesTaxom
Megalograptus Miller, 1874
0SpeciesTaxom

Subnodes of Eurypterida with occurrences in Ordovician
SuborderStylonurina ♰
Diener, 1924
1
1
0		Family
Genus
Species
Taxom

FamilyEurypteridae ♰
De Kay, 1825
1
0		Genus
Species
Taxom



Links, sources and further information
Eurypterida at irmng.org