Tham khảo Danh_sách_các_loài_của_ngành_Vetulicolia

  1. ↑ “Sự phân bố của ngành Vetulicolia”.
  2. ↑ McMenamin, Mark A. S. (tháng 8 năm 2019). “Cambrian Chordates and Vetulicolians”. Geosciences (bằng tiếng Anh). 9 (8): 354. doi:10.3390/geosciences9080354.
  3. ↑ Palaeocritti - a guide to prehistoric animals Yuyuanozoon magnificissimi
  4. ↑ Shu, D. -G.; Morris, S. C.; 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. 414 (6862): 419–424. doi:10.1038/35106514. PMID 11719797.
  5. ↑
    • Butterfield, Nicholas J. 2003. Exceptional Fossil Preservation and the Cambrian Explosion. Integrative and Comparative Biology. 43(1):166-177. - URL retrieved June 22, 2006
    • Dominguez, Patricio and Jefferies, Richard. 2003. Fossil evidence on the origin of appendicularians. International Urochordate Meeting 2003. Abstract at - URL retrieved June 22, 2006
    • LUO, Huilin, FU, Xiaoping, HU, Shixue, LI, Yong, CHEN, Liangzhong, YOU, Ting and LIU, Qi. 2005. New Vetulicoliids from the Lower Cambrian Guanshan Fauna, Kunming. Abstract at [liên kết hỏng] - URL retrieved June 30, 2008
    • Shu, D.-G., Conway Morris, S., Han, J., Chen, L., Zhang, X.-L., Zhang, Z.-F., Liu, H.-Q., Li, Y., and Liu, J.-N. 2001. Primitive Deuterostomes from the Chengjiang Lagerstätte (Lower Cambrian, China), Nature, 414:419-424. (November 11, 2001). Abstract at . - URL retrieved June 30, 2008
    • Shu, Degan. 2003. A paleontological perspective of vertebrate origin. Chinese Science Bulletin, Vol. 48 No. 8 725-735. April, 2003. Abstract at Lưu trữ 2008-12-11 tại Wayback Machine - URL retrieved June 30, 20081911

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