After Shu, Conway Morris, Han, Chen, Zhang, Zhang, Liu, Li & Liu, 2001
<==o †Vetulicolia Shu, Conway Morris, Han, Chen, Zhang, Zhang, Liu, Li & Liu, 2001 |?-o †Yunnanozoa Dzik, 1995 sensu Shu, et al. 2003 [of uncertain taxonomic position, often treated as basal chordates] | `--o †Yunnanozoonidae Dzik, 1995 | |-- †Yunnanozoon lividum Chen et al., 1995 [possibly a hemichordate??] | `--o †Haikouella Chen et al., 1999 | |-- †H. lanceolata Chen et al., 1999 | `-- †H. jianshanensis Shu, Conway Morris, Zhang, Liu, Han, Chen, Zhang, Yasui & Li, 2003 `--o †Vetulicolida Chen & Zhou, 1997 [has previously been treated as aberrant arthropods] |-- †Banffia `--+--o †Didazoonidae Shu & Han, in Shu, Conway Morris, Han, Chen, Zhang, Zhang, Liu, Li & Liu, 2001 | |-- †Xidazoon stephanus Shu, Conway Morris & Zhang, in Shu, Conway Morris, Zhang, Chen, Li & Han, 1999 | `-- †Didazoon haoae Shu & Han, in Shu, Conway Morris, Han, Chen, Zhang, Zhang, Liu, Li & Liu, 2001 `--o †Vetulicolidae |?- †Pomatrum ventralis `--o †Vetulicola |-- †V. rectangulata `-- †V. cuneata
Reference(s):
- Chen, J.-Y., Dzik, J., Edgecombe, G. D., Ramsköld, L. & Zhou, G.-Q. 1995: A possible Early Cambrian chordate.
–Nature: vol. 377, 26 October, pp. 720-722 - Chen, J.-Y., Huang, D.-Y. & Li, C.-W., 1999: An early Cambrian craniate-like chordate.
–Nature: vol. 402, 2 December, pp. 518-522 - Gee, H., 2001: On being vetulicolian.
–Nature: Vol. 414, pp. 407-408 - Shu, D.-G., Conway Morris, S., Han, J., Chen, L., Zhang, X.-L., Zhang, Z.-F., Liu, H.-Q., Li, Y. & Liu, J.-N., 2001: Primitive deuterostomes from the Chengjiang Lagerstätte (Lower Cambrian, China).
–Nature: Vol. 414, pp. 419-424 - Shu, D.-G., Conway Morris, S., Zhang, Z.-F., Liu, J. N., Han, J., Chen, L., Zhang, X.-L., Yasui, K. & Li, Y., 2003: A new species of Yunnanozoan with implications for Deuterostome evolution.
–Science: Vol. 299, pp. 1380-1384 - Shu, D.-G., Conway Morris, S., Zhang, X.-L., Chen, L., Li, Y. & Han, J., 1999: A pipiscid-like fossil from the Lower Cambrian of south China.
–Nature: Vol. 400, pp. 746-749