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Taxon: Order †Eurypterida Burmeister, 1843 - eurypterids (arthropod)

Entity:

Concise hierarchy

(Kingdom) Animalia - (Phylum) Arthropoda - (Class) Eurypterida

Current position

†Eurypterida (Class) Burmeister, 1843

Ref: Dunlop & Lamsdell, 2017: tbl. 1 (p. 397); Dunlop et al., 2023: 19 [inferred]

Alternative positions

†*Eurypteridea* (Class)	Ref: [Anonymous], 2007: 4 Oct 2007.
*Merostomata* (Class) Dana, 1852	Ref: J.J. Sepkoski Jr., 2002: 169.
*Merostomata* (Subclass) Dana, 1852	Ref: R.C. Brusca & G.J. Brusca, 1990: 493.

Historical positions

*Euchelicerata* ([unranked]) Weygoldt & Paulus, 1979	Ref: J.A. Dunlop et al., 2023: 19.
*Chelicerata* (Subphylum) Heymons, 1901	Ref: J.A. Dunlop et al., 2020: 17.
*Euchelicerata* ([unranked]) Weygoldt & Paulus, 1979	Ref: J.A. Dunlop et al., 2012: 16. [inferred rank]
*Merostomata* (Class) Dana, 1852	Ref: J.J. Sepkoski Jr., 2002: 169.
*Merostomata* (Subclass) Dana, 1852	Ref: R.C. Brusca & G.J. Brusca, 1990: 493.
*Merostomata* (Class) Dana, 1852	Ref: R.S. Boardman et al., 1987
*Merostomata* (Class) Dana, 1852	Ref: H.W. Levi, 1982: 72.

Number of Subtaxa

2026	Available in Systema Naturae 2000	†21f;75g;3s
1989-present	Systema Naturae 2000: 1 Aug 2024	[; †21f;75g]
2023	J.A. Dunlop et al.: 19, 32	0s; †[21f;75g];253s
2020	J.A. Dunlop et al.: 28	[; †21f;73g]
2012	J.A. Dunlop et al.: 16	†246s
2012	J.A. Dunlop et al.: 16	†246s

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Last updated: 28 Aug 2026