Nectocarididae is a controversial family of animals that superficially resemble squids. Only two genera have been described, being Nectocaris (=Vetustovermis, Petalilium?) from the Cambrian period, and Nectocotis, from the Ordovician period.[2] Some researchers claim they are cephalopods, however, this is heavily disputed and most reject this claim.[3][4] They may be related to chaetognaths, on account of their similar body plan to Timorebestia, however this is unclear.

Nectocarididae
Temporal range: 520–461 Ma
Nectocaris pteryx after the reconstruction of Smith & Caron (2010)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Clade: Bilateria
Family: Nectocarididae
Conway Morris, 1976
Genera[1]

List of Genera

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References

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  1. ^ "Nectocarididae". Paleobiology Database. Retrieved 7 December 2023.
  2. ^ Smith, Martin R. (2019). "An Ordovician nectocaridid hints at an endocochleate origin of Cephalopoda" (PDF). Journal of Paleontology. 94: 64–69. doi:10.1017/jpa.2019.57. S2CID 201208912.64-69&rft.date=2019&rft_id=info:doi/10.1017/jpa.2019.57&rft_id=https://api.semanticscholar.org/CorpusID:201208912#id-name=S2CID&rft.aulast=Smith&rft.aufirst=Martin R.&rft_id=http://dro.dur.ac.uk/28457/1/28457.pdf&rfr_id=info:sid/en.wikipedia.org:Nectocarididae" class="Z3988">
  3. ^ Pohle, Alexander; Kröger, Björn; Warnock, Rachel C. M.; King, Andy H.; Evans, David H.; Aubrechtová, Martina; Cichowolski, Marcela; Fang, Xiang; Klug, Christian (December 2022). "Early cephalopod evolution clarified through Bayesian phylogenetic inference". BMC Biology. 20 (1): 88. doi:10.1186/s12915-022-01284-5. ISSN 1741-7007. PMC 9008929. PMID 35421982.
  4. ^ Kröger, Björn; Vinther, Jakob; Fuchs, Dirk (August 2011). "Cephalopod origin and evolution: A congruent picture emerging from fossils, development and molecules". BioEssays. 33 (8): 602–613. doi:10.1002/bies.201100001. PMID 21681989. S2CID 2767810.602-613&rft.date=2011-08&rft_id=https://api.semanticscholar.org/CorpusID:2767810#id-name=S2CID&rft_id=info:pmid/21681989&rft_id=info:doi/10.1002/bies.201100001&rft.aulast=Kröger&rft.aufirst=Björn&rft.au=Vinther, Jakob&rft.au=Fuchs, Dirk&rft_id=https://onlinelibrary.wiley.com/doi/10.1002/bies.201100001&rfr_id=info:sid/en.wikipedia.org:Nectocarididae" class="Z3988">