Biology:Nectocarididae
Nectocarididae is a controversial family of animals that superficially resemble squids. Represented by Nectocaris (=Vetustovermis, Petalilium?) and Nektognathus from the Cambrian period (as well as possibly Nectocotis from the Ordovician).[1][2] Some researchers claim they are cephalopods, however, this is heavily disputed and most reject this claim.[3][4] A 2025 paper describing the new genus Nektognathus found paired jaw elements in both it and Nectocaris which revealed them to be related to chaetognaths (arrow worms), in particular the superficially similar Timorebestia, due to the jaw elements being homologous to those of other chateognathiferans, as well as the possession of nerve structure called the "ventral ganglion" characteristic of chaetognaths.[1]
List of genera
- Nectocaris
- Nectocotis? Not diagnostic for the family[1]
- Vetustovermis? Synonym of Nectocaris
- Petalilium? Synonym of Nectocaris
- Nektognathus
References
- ↑ 1.0 1.1 1.2 Vinther, Jakob; Parry, Luke A.; Lee, Mirinae; Nielsen, Morten Lunde; Oh, Yeongju; Park, Changkun; Kihm, Ji-Hoon; DeVivo, Giacinto et al. (25 July 2025). "A fossilized ventral ganglion reveals a chaetognath affinity for Cambrian nectocaridids". Science Advances 11 (30). doi:10.1126/sciadv.adu6990.
- ↑ Smith, Martin R. (2019). "An Ordovician nectocaridid hints at an endocochleate origin of Cephalopoda". Journal of Paleontology 94: 64–69. doi:10.1017/jpa.2019.57. http://dro.dur.ac.uk/28457/1/28457.pdf.
- ↑ Pohle, Alexander; Kröger, Björn; Warnock, Rachel C. M.; King, Andy H.; Evans, David H.; Aubrechtová, Martina; Cichowolski, Marcela; Fang, Xiang et al. (December 2022). "Early cephalopod evolution clarified through Bayesian phylogenetic inference" (in en). BMC Biology 20 (1): 88. doi:10.1186/s12915-022-01284-5. ISSN 1741-7007. PMID 35421982.
- ↑ Kröger, Björn; Vinther, Jakob; Fuchs, Dirk (August 2011). "Cephalopod origin and evolution: A congruent picture emerging from fossils, development and molecules" (in en). BioEssays 33 (8): 602–613. doi:10.1002/bies.201100001. PMID 21681989. https://onlinelibrary.wiley.com/doi/10.1002/bies.201100001.
Wikidata ☰ Q21293681 entry
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