Concise hierarchy

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

Subsequent positions

†Nectaspidida (Order) Raymond, 1920, nom. corr.		Ref: X. Hou & J. Bergström, 1997: 44. [assumed]
†Nektaspida (Class) Raymond, 1920		Ref: B. Mayers et al., 2019(2018)

Current position

†Nektaspida (Class) Raymond, 1920

Ref: B. Mayers et al., 2019(2018) [new position]

Alternative positions

†Nectaspidida (Order) Raymond, 1920, nom. corr.	Ref: X. Hou & J. Bergström, 1997: 44. [new position]
†Nektaspida (Order) Raymond, 1920	Ref: J.R. Paterson et al., 2010: text-fig. 9.
†Trilobitomorpha ([unranked]) Størmer, 1944	Ref: J.R. Hendricks & B.S. Lieberman, 2008: 585.

Historical positions

†Nektaspida (Class) Raymond, 1920	Ref: B. Mayers et al., 2019(2018) [new position]
†Nektaspida (Order) Raymond, 1920	Ref: J.R. Paterson et al., 2010: text-fig. 9.
†Trilobitomorpha ([unranked]) Størmer, 1944	Ref: J.R. Hendricks & B.S. Lieberman, 2008: 585, 591.
†Nektaspida (Order) Raymond, 1920	Ref: J.-B. Caron et al., 2004
†Nectaspidida (Order) Raymond, 1920, nom. corr.	Ref: X. Hou & J. Bergström, 1997: 112. [new position]

Number of Subtaxa

2025	Available in Systema Naturae 2000	†6g;13s
1989-present	Systema Naturae 2000: 2 Dec 2020	[; †6g]
2019(2018)	B. Mayers et al.:	[; †5g]