Classification of Størmer 1955

Cl. Merostomata Dana 1852
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Subcl. †Eurypterida Burmeister 1843 [eurypterid]
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Invalid names: Eurypteracea Burmeister 1845 [empty], Gigantostraca Haeckel 1896 [synonym], Stylonuracea Diener 1924 [empty]
Subcl. Xiphosura Latreille 1802
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Or. Aglaspida Walcott 1911
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Fm. †Aglaspididae Miller 1877
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G. †Aglaspella Raasch 1939
G. †Aglaspis Hall 1862
G. †Aglaspoides Raasch 1939
G. †Craspedops Raasch 1939
G. †Cyclopites Raasch 1952
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Invalid names: Cyclopina Raasch 1939 [synonym]
G. †Glypharthrus Raasch 1939
G. †Setaspis Raasch 1939
G. †Uarthrus Raasch 1939
Fm. †Paleomeridae Størmer 1955
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G. †Paleomerus Stømer 1955
Fm. †Strabopidae Gerhardt 1932
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G. †Neostrabops Caster and Macke 1952
G. †Strabops Beecher 1901
Invalid names: Beckwithiidae Raasch 1939 [empty]
Or. Xiphosurida Latreille 1802
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Subor. Limulina Richter and Richter 1929
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Superfm. †Belinuracea Zittel and Eastman 1913
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Fm. †Belinuridae Zittel and Eastman 1913
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G. †Belinurus Bronn 1839
G. †Neobelinuropsis Eller 1938
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†Neobelinuropsis rossicus Chernyshev 1933
Invalid names: Bellinuroopsis [synonym]
G. †Protolimulus Packard 1886
G. †Pincombella Chapman 1932
Invalid names: Euproopacea Eller 1938 [empty], Limulacea Leach 1819 [empty]
Subor. †Synziphosurina Packard 1886
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Fm. †Bunodidae Packard 1886
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G. †Bembicosoma Laurie 1899
G. †Bunaia Clarke 1919
G. †Bunodes Eichwald 1859
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Invalid names: Exapinurus Nieszkowski 1859 [synonym]
Fm. †Limuloididae Størmer 1952
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G. †Limuloides Woodward 1865
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†Limuloides limuloides Woodward 1864
Invalid names: Hemiaspis Woodward 1864 [replaced]
Invalid names: Hemiaspidae Zittel 1881 [replaced]
Fm. †Pseudoniscidae Packard 1886
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G. †Bunodella Matthew 1889
G. †Cyamocephalus Currie 1927
G. †Pseudoniscus Nieszkowski 1859
Fm. †Weinberginidae Richter 1929
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G. †Weinbergina Richter and Richter 1929
Invalid names: Bunodomorpha Zittel and Eastman 1913 [synonym], Neolimulidae Packard 1886 [empty]
Invalid names: Gnathopoda Straus-Durkheim 1829 [synonym], Poecilopoda Claus 1868 [synonym], Xyphosures Latrielle 1802 [synonym]
Invalid names: Poecilopoda M'Coy 1849 [synonym]
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Fm. †Palaeopantopodidae Hedgpeth 1955
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G. †Palaeopantopus Broili 1929
Subph. Chelicerata Heymons 1901
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G. †Glyptoscorpius Peach 1882
Fm. Tanystylidae Shimkevich 1913
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