主题：【已应助】求助英文文献5篇，谢谢！！！

【序号】：1
【作者】：ARTEM KOUCHINSKY*,, STEFAN BENGTSON*, BRUCE RUNNEGAR, CHRISTIAN SKOVSTED*, MICHAEL STEINER§ and MICHAEL VENDRASCO
【题名】：Chronology of early Cambrian biomineralization
【期刊】：Geological Magazine,
【年、卷、期、起止页码】：doi: 10.1017/S0016756811000720 v. 149 no. 2 p. 221-251 March 2012, v. 149, p. 221-251
【全文链接】：http://geolmag.geoscienceworld.org/content/149/2/221.abstract

【序号】：2
【作者】：Michael Steiner*1, Maoyan Zhu*2, Guoxiang Li*2, Yi Qian*2 and Bernd-D. Erdtmann*3
【题名】：New Early Cambrian bilaterian embryos and larvae from China
【期刊】：Geology
【年、卷、期、起止页码】：October, 2004, v. 32, p. 833-836, doi:10.1130/G20567.1doi: 10.1130/G20567.1 v. 32 no. 10 p. 833-836
【全文链接】：http://geology.gsapubs.org/content/32/10/833.short

【序号】：3
【作者】：Leanne J. Pyle, Guy M. Narbonne, Godfrey S. Nowlan, Shuhai Xiao and Noel P. James
【题名】：Early Cambrian Metazoan Eggs, Embryos, and Phosphatic Microfossils from Northwestern Canada
【期刊】：Journal of Paleontology,
【年、卷、期、起止页码】： September 1, 2006, v. 80, p. 811-825 doi: 10.1666/0022-3360(2006)80[811:ECMEEA]2.0.CO;2 v. 80 no. 5 p. 811-825
【全文链接】：http://jpaleontol.geoscienceworld.org/content/80/5/811.abstract

【序号】：4
【作者】：P. Y. Parkhaev
【题名】：The Cambrian ‘basement’ of gastropod evolution
【期刊】：Geological Society,
【年、卷、期、起止页码】： London, Special Publications 2007, v. 286, p. 415-421  doi: 10.1144/SP286.31
【全文链接】：http://sp.lyellcollection.org/content/286/1/415

【序号】：5
【作者】：Jakob Vinther* andClaus Nielsen*
【题名】：The Early Cambrian Halkieria is a mollusc
【期刊】：Zoologica Scripta
【年、卷、期、起止页码】：Volume 34, Issue 1, pages 81–89, January 2005DOI: 10.1111/j.1463-6409.2005.00177.x
【全文链接】：http://onlinelibrary.wiley.com/doi/10.1111/j.1463-6409.2005.00177.x/abstract

谢谢，万分感谢