Concise hierarchy

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

Original position

†Artiopoda (Class) Hou & Bergström, 1997

Subsequent positions

†Nektaspida (Class) Raymond, 1920

Ref: B. Mayers et al., 2019(2018)

Original entries

†Sinoburiida (Order) H. Xianguang & J. Bergström, 1997

Subsequent entries

†Cheloniellida (Order) Broili, 1933		Ref: X. Hou & J. Bergström, 1997: 112. [assumed]
†Xandarellida (Order) Chen et al., 1996		Ref: X. Hou & J. Bergström, 1997: 73. [assumed]

Current position

†Nektaspida (Class) Raymond, 1920

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

Alternative positions

†Artiopoda (Subphylum) Hou & Bergström, 1997	Ref: R. Lerosey-Aubril et al., 2017: fig. 6. [inferred rank]
†Artiopoda (Class) Hou & Bergström, 1997	Ref: X. Hou & J. Bergström, 1997: 73. [new taxon]
†Trilobitomorpha ([unranked]) Størmer, 1944	Ref: J. Bergström & X.-G. Hou, 2003: fig. 4.

Historical positions

†Nektaspida (Class) Raymond, 1920	Ref: B. Mayers et al., 2019(2018) [new position]
†Artiopoda (Subphylum) Hou & Bergström, 1997	Ref: R. Lerosey-Aubril et al., 2017: fig. 6.
†Trilobitomorpha ([unranked]) Størmer, 1944	Ref: J. Bergström & X.-G. Hou, 2003: fig. 4.
†Artiopoda (Class) Hou & Bergström, 1997	Ref: X. Hou & J. Bergström, 1997: 112. [new taxon]

Number of Subtaxa

2026	Available in Systema Naturae 2000	†2o;3f;4g;4s
1989-present	Systema Naturae 2000	[; †2o;3f]
1997	X. Hou & J. Bergström	[; †3o;4f]
1997	X. Hou & J. Bergström	[; †3o;4f]