Chengjiangocaris

Chengjiangocaris is an extinct genus of fuxianhuiid arthropod known from the Cambrian of South China. It contains two species, C. longiformis which was described in 1991. C. kunmingensis was described in 2013 by Javier Ortega-Hernández and colleagues.[1][2] One specimen of C. kunmingensis shows detailed evidence of a nervous system.[3] The nervous system of the chengjiangocaris is and has always been very complex to understand but a recent discovery of the ladder like ventral nerval cords and segmental ganglia of the related chengjiangocaris together with the brain provide the most comprehensive reconstruction of any lower Cambrian arthropod.

Chengjiangocaris
Temporal range:
Life restoration of Chengjiangocaris kunmingensis
Chengjiangocaris kunmingensis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Order: †Fuxianhuiida
Family: †Chengjiangocarididae
Genus: †Chengjiangocaris
Hou and Bergström, 1991
Species

Chengjiangocaris longiformis Hou and Bergström,1991
Chengjiangocaris kunmingensis Yang et al., 2013

Anatomy
Anterior section of Chenjiangocaris

C. kunmingensis has 20 anterior trunk tergites and up to 16 narrow anterior tergites.[4]

Phylogeny

After[5]

Fuxianhuiida

Shankouia

Liangwangshania

Chengjiangocarididae

Alacaris

Chengjiangocaris

Fuxianhuiidae

Fuxianhuia

Guangweicaris

Xiaocaris

References
  1. "Figure 3: Reconstruction of Chengjiangocaris kunmingensis". Researchgate. Retrieved 1 March 2016.
  2. "520m-year-old nervous system among oldest and most detailed ever found". The Guardian. 1 March 2016. Retrieved 1 March 2016.
  3. Feltman, Rachel (March 1, 2016). "Exquisitely detailed 520 million-year-old fossil shows individual nerves". Washington Post. Retrieved 1 March 2016.
  4. Yang, Jie; Ortega-Hernández, Javier; Butterfield, Nicholas J.; Zhang, Xi-guang (February 2013). "Specialized appendages in fuxianhuiids and the head organization of early euarthropods". Nature. 494 (7438): 468–471. Bibcode:2013Natur.494..468Y. doi:10.1038/nature11874. ISSN 0028-0836. PMID 23446418. S2CID 4424201.
  5. Liu, Yu; Ortega-Hernández, Javier; Chen, Hong; Mai, Huijuan; Zhai, Dayou; Hou, Xianguang (December 2020). "Computed tomography sheds new light on the affinities of the enigmatic euarthropod Jianshania furcatus from the early Cambrian Chengjiang biota". BMC Evolutionary Biology. 20 (1): 62. doi:10.1186/s12862-020-01625-4. ISSN 1471-2148. PMC 7268425. PMID 32487135.

Further reading
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