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Temporal range: Chengjiang
Cathaymyrus diacodexis.jpg
C. diadexus and Vetulocystis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Cephalochordata
Genus: Cathaymyrus Shu, Conway Morris & Zhang 1996
  • C. diadexus Shu, Conway Morris & Zhang 1996
  • C. haikoensis Luo & Hu 2001

Cathaymyrus is a genus of Early Cambrian cephalochordate known from the Chengjiang locality in Yunnan Province, China.[1] Both species have a long segmented body with no distinctive head. The segments resemble the v-shaped muscle blocks found in similar cephalochordates such as Amphioxus. A long linear impression runs along the "back" of the body looking something like a chordate notochord. Cathaymyrus is related to Pikaia, another cephalochordate from the Burgess Shale.

See also[edit]


  1. ^ Shu, D-G.; Luo, H-L.; Conway Morris, S.; Zhang, X-L.; Hu, S-X.; Chen, L.; Han, J.; Zhu, M.; Li, Y.; Chen, L-Z. (1999). "Lower Cambrian vertebrates from south China". Nature. 402 (6757): 42. Bibcode:1999Natur.402...42S. doi:10.1038/46965.