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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 |
|---|---|
| 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 | |
|---|---|---|
| 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.) |
Measurements
No measurements are available
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| Source: o = order, p = phylum | |||||
| References: Budd 1999, Kiessling 2004 | |||||
Age range: base of the Atdabanian to the top of the Hirnantian or 521.00000 to 443.40000 Ma
Collections (93 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Atdabanian | Greenland (Peary Land) | Buenaspis forteyi (90574) | |
| Atdabanian | Poland (Pomeranian Voivodeship) | Liwia plana (90598) | |
| Atdabanian | China (Yunnan) | Naraoia longicaudata (86845 86848 90129 90133 90138 90161 96404 96414 96415) Naraoia longicaudata, Naraoia spinosa (86851 90149 90163 90164 90165 90166 90494 90495 96405 96406 96408 96409 96410 96411 96412 96413 96416) Naraoia longicaudata, Naraoia spinosa, Cindarella eucalla (90137) Naraoia longicaudata, Naraoia spinosa, Sinoburius lunaris (96402) Naraoia longicaudata, Naraoia spinosa, Xandarella spectaculum (96403 96407) Naraoia longicaudata, Naraoia spinosa, Xandarella spectaculum, Cindarella eucalla (86846) Naraoia longicaudata, Xandarella spectaculum (90151) Naraoia sp. (86931 86932) Naraoia sp., Cindarella sp., Sinoburius sp., Xandarella sp. (86930) Naraoia sp., Cindarella sp., Xandarella sp. (86929) Naraoia sp., Naraoia longicaudata, Naraoia spinosa, Xandarella sp., Sinoburius lunaris, Cindarella eucalla (68083) Naraoia sp., Xandarella sp. (86933) | |
| Atdabanian | China (Guizhou) | Naraoia longicaudata, Naraoia spinosa (86849) | |
| Atdabanian | Poland (Masovian Voivodeship) | Liwia convexa (90599) | |
| Nangaoian | China (Yunnan) | Naraoia longicaudata (132328) Naraoia longicaudata, Naraoia spinosa (132329 194140 194141 194162) Naraoia longicaudata, Naraoia spinosa, Xandarella spectaculum (132327) Naraoia longicaudata, Naraoia spinosa, Xandarella spectaculum, Cindarella eucalla (132330) Naraoia sp., Naraoia longicaudata, Naraoia spinosa, Cindarella eucalla (194150 194155) Naraoia sp., Naraoia longicaudata, Naraoia spinosa, Xandarella spectaculum (194153) Naraoia sp., Naraoia longicaudata, Naraoia spinosa, Xandarella spectaculum, Cindarella eucalla (194143 194161 194163) Naraoia spinos, Naraoia sp., Naraoia longicaudata (194160) | |
| Nangaoian | China (Guizhou) | Naraoia spomposa (128423) | |
| Nangaoian | China (Hubai) | Naraoia sp., Misszhouia sp. (219687) | |
| Botomian | Australia (South Australia) | Xandarella indet., Emucaris fava, Kangacaris zhangi (187498) | |
| Delamaran | Canada (British Columbia) | Naraoia compacta (84412 84414 84415 84416 84418 84419 84422 84423 84425 84426 84427 84429 84430 84431 84432 84433 84434 84435 84436) Naraoia spinifer, Naraoia compacta (84424 84428) | |
| Taijangian | China (Guizhou) | Naraoia sp. (79769 79770) | |
| Middle Cambrian | Canada (British Columbia) | Misszhouia longicaudata, Naraoia compacta (171308) | |
| Middle Cambrian | Canada (Brithish Columbia) | Naraoia sp. (188662 188664) | |
| St Davids | Canada (British Columbia) | Naraoia compacta (122072 122094) | |
| Marjumian | USA (Utah) | Naraoia compacta (77206 228653 230679 230682) | |
| Berounian | Italy (Sardinia) | Tariccoia arrusensis (215899) | |
| Hirnantian | South Africa | Soomaspis splendida (26994) |