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Nektaspidida
Taxonomy
Nektaspida was named by Raymond (1920). It was considered monophyletic by Ortega-Hernandez et al. (2013).
It was reranked as the class Nectaspidida by Peng et al. (2012); it was reranked as the class Nektaspidida by Lerosey-Aubril et al. (2017); it was reranked as the class Nektaspida by Mayers et al. (2019); it was corrected as Nektaspidida by Lerosey-Aubril et al. (2020).
It was assigned to Arthropoda by Budd (1999) and Peng et al. (2012); to Trilobitomorpha by Ortega-Hernandez et al. (2013); to Artiopoda by Lerosey-Aubril et al. (2017); and to Trilobitomorpha by Mayers et al. (2019) and Lerosey-Aubril et al. (2020).
It was reranked as the class Nectaspidida by Peng et al. (2012); it was reranked as the class Nektaspidida by Lerosey-Aubril et al. (2017); it was reranked as the class Nektaspida by Mayers et al. (2019); it was corrected as Nektaspidida by Lerosey-Aubril et al. (2020).
It was assigned to Arthropoda by Budd (1999) and Peng et al. (2012); to Trilobitomorpha by Ortega-Hernandez et al. (2013); to Artiopoda by Lerosey-Aubril et al. (2017); and to Trilobitomorpha by Mayers et al. (2019) and Lerosey-Aubril et al. (2020).
Subtaxa
Synonyms
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Synonymy list
Year | Name and author |
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1920 | Nektaspida Raymond |
1999 | Nektaspida Budd |
2002 | Naraoiida Sepkoski |
2012 | Nectaspidida Peng et al. p. 146 |
2013 | Nektaspida Ortega-Hernandez et al. p. 38 fig. 6a |
2017 | Nektaspidida Lerosey-Aubril et al. p. 8 fig. 6 |
2019 | Nektaspida Mayers et al. p. 33 |
2020 | Nektaspidida Lerosey-Aubril et al. p. 515 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Or. †Nektaspidida Raymond 1920
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Fm. †Emucarididae Paterson et al. 2010
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Fm. †Naraoiidae Walcott 1912
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G. †Misszhouia Chen et al. 1997
G. †Naraoia Walcott 1912
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†Naraoia compacta Walcott 1912
†Naraoia longicaudata Zhang and Hou 1985
†Naraoia spinosa Zhang and Hou 1985
Subcl. †Petalopleura Hou and Bergstrom 1997
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G. †Tarricoia Hammann et al. 1990
Invalid names: Naraoiida [replaced]
Diagnosis
Reference | Diagnosis | |
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B. Mayers et al. 2019 | Trilobitomorph artiopodans with the following characters as their ground pattern: lateral eyes reduced or absent; hypostome with natant attachement; extensive articulation overlap between unfused trunk tergites; fused pleurae not forming lateral spines. (Emended from Raymond 1920.) |