|
|||||
|
|
Pikaia gracilens Walcott, a stem-group chordate from the Middle Cambrian of British Columbia |
|
| Authors: | Morris Simon Conway Caron Jean-Bernard |
| Affiliation: | Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK. sc113@cam.ac.uk |
| Abstract: | |
| Keywords: | Pikaia Burgess Shale Cambrian chordates evolution yunnanozoans amphioxus |
| 本文献已被 PubMed 等数据库收录！ | |