Biology:Jianfengia
Jianfengia is an extinct genus of Middle Cambrian (Atdabanian) megacheiran arthropod found in the Maotianshan Shale Lagerstätte of China. It contains the single species Jianfengia multisegmentalis.[1] The body is extremely elongated, though the animal itself was relatively small at less than 4 centimetres (1.6 in) in length.[2] The head has a pair of stalked eyes, a hypostome/labrum complex, a pair of great appendages with five podomeres, and four pairs of biramous limbs.[3] The maximum known number of trunk segments is 27, though most known specimens have 20, which are associated with pairs of biramous appendages, and the body ends with a telson spine. It has been placed as a member of the family Jiangfengiidae, alongside Fortiforceps and Sklerolibyon as well as possibly Parapeytoia.[2] Different phylogenetic studies recovered it as a member of the stem group of Euarthropoda,[2] a member of the stem group of Chelicerata[4] or the sister taxon of the total group of Mandibulata, based on a reconstruction of its brain and nervous system.[5]
See also
- List of Chengjiang Biota species by phylum
- Megadictyon
References
- ↑ Jianfengia in the Paleobiology Database
- ↑ 2.0 2.1 2.2 Aria, Cédric; Zhao, Fangchen; Zeng, Han; Guo, Jin; Zhu, Maoyan (December 2020). "Fossils from South China redefine the ancestral euarthropod body plan" (in en). BMC Evolutionary Biology 20 (1): 4. doi:10.1186/s12862-019-1560-7. ISSN 1471-2148. PMID 31914921. Bibcode: 2020BMCEE..20....4A.
- ↑ Zhang, Xilin; Liu, Yu; O'Flynn, Robert J.; Schmidt, Michel; Melzer, Roland R.; Hou, Xianguang; Mai, Huijuan; Guo, Jin et al. (September 2022). Zhang, Xi-Guang. ed. "Ventral organization of Jianfengia multisegmentalis Hou, and its implications for the head segmentation of megacheirans" (in en). Palaeontology 65 (5). doi:10.1111/pala.12624. ISSN 0031-0239. Bibcode: 2022Palgy..6512624Z. https://onlinelibrary.wiley.com/doi/10.1111/pala.12624.
- ↑ Parry, L. A.; Briggs, D. E. G.; Ran, R.; O'Flynn, R. J.; Mai, H.; Clark, E. G.; Liu, Y. (2024). "A pyritized Ordovician leanchoiliid arthropod". Current Biology 34 (23): 5578–5586.e2. doi:10.1016/j.cub.2024.10.013. PMID 39476836. Bibcode: 2024CBio...34.5578P.
- ↑ Strausfeld, N. J.; Andrew, D. R.; Hou, X.; Hirth, F. (2025). "Brain anatomy of the Cambrian fossil Jianfengia multisegmentalis informs euarthropod phylogeny". Nature Communications 16. doi:10.1038/s41467-025-62849-w. PMID 40877252.
Template:Megacheira Wikidata ☰ Q21368787 entry
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