Facivermis yunnanicus: differenze tra le versioni

* {{en}} Hou, X., and Chen, J., 1989. Early Cambrian tentacled worm-like animals (''Facivermis'' gen. nov.) from Chengjiang, Yunan. Acta Palaeontologica Sinica, v. 28, p. 32-41; In Chinese and English.

* {{en}} Liu J., Han J., Simonetta M., Hu S., Zhang Z., Yao Y. and Shu Degan, 2006. New observations of the lobopod-like worm ''Facivermis'' from the early cambrian Chengjiang Lagerstätte, Chinese Science Bulletin 51(3) ISSN 1001-6538