Extinct genus of arthropods
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. One specimen of "C. kunmingensis" shows detailed evidence of a nervous system.
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. 
Anatomy.
"C. kunmingensis" has 20 anterior trunk tergites and up to 16 narrow anterior tergites.
Phylogeny.
After
References.
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