全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
科学通报  2013 

关山生物群中奇虾类前附肢的新发现

, PP. 2940-2945

Keywords: 云南,寒武纪,奇虾,前附肢关山生物群

Full-Text   Cite this paper   Add to My Lib

Abstract:

奇虾是寒武纪海洋中一类大型的捕食动物,处于海洋生态金字塔的顶端.完整奇虾化石很少见,通常保存前附肢及口器化石.本文研究了云南省昆明市高楼房剖面寒武系第二统第四阶乌龙箐组的大量奇虾类前附肢化石,建立Anomalocaris属的一新种A.kunmingensissp.nov.,以及1个新类型Paranomalocarismultisegmentalisgen.nov.,sp.nov.其中A.kunmingensissp.nov.可能具有15个肢节,第3节具有强壮的基腹刺,基腹刺具有不对称的6个腹侧刺,在基腹刺节之前可能存在2节,第1节骨化较弱、弯曲,第2节下方具有较小的刺突,4~14节腹刺具成对的腹侧刺,12~14节具背刺,末节具有一大一小2个端刺.P.multisegmentalisgen.nov.,sp.nov.可见22节,向前明显渐细,大部分腹刺具有约5对小型腹侧刺,近末端的10个肢节具有背刺,末节具有2个很小的端刺.新化石材料的发现增加了我们对寒武纪奇虾类多样性的了解.通过对奇虾类前附肢形态特征的分析有助于揭示这类寒武纪大型食肉动物的捕食策略及它们在早期生态系统中的作用和地位.

References

[1]  1 Chen J Y, Ramsk?ld L, Zhou G Q. Evidence for monophyly and arthropod affinity of Cambrian giant predators. Science, 1994, 264: 1304-1308
[2]  2 Whittington H B, Briggs D E G. The large Cambrian animal, Anomalocaris, Burgess Shale, British Columbia. Phil Trans R Soc Lond B, 1985, 309: 569-609
[3]  5 Daley A C, Budd G E, Caron J B, et al. The Burgess Shale anomalocaridid Hurdia and its significance for early euarthropod evolution. Science, 2009, 323: 1597-1600
[4]  6 Daley A C, Budd G E. New anomalocaridid appendages from the Burgess Shale, Canada. Palaeontology, 2010, 53: 721-738
[5]  7 陈均远. 动物世界的黎明. 南京: 江苏科学技术出版社, 2004. 1-366
[6]  9 Van Roy P, Briggs D E G. A giant Ordovician anomalocaridid. Nature, 2011, 473: 511-513
[7]  10 Paterson J R, García-Bellido D C, Lee M S Y, et al. Acute vision in the giant Cambrian predator Anomalocaris and the origin of compound eyes. Nature, 2011, 480: 237-240
[8]  11 Kühl G, Briggs D E G, Rust J. A great-appendage arthropod with a radial mouth from the Lower Devonian Hunsrück Slate, Germany. Science, 2009, 323: 771-773
[9]  12 Chen J Y, Zhou G Q. Biology of Chengjiang fauna. Bull Natl Mus Nat Sci, 1997, 1: 11-83
[10]  13 Steiner M, Zhu M Y, Zhao Y L, et al. Lower Cambrian Burgess Shale-type fossil associations of south China. Palaeogeogr Palaeoclimatol Palaeoecol, 2005, 220: 129-152
[11]  14 罗惠麟, 李勇, 胡世学, 等. 云南东部早寒武世马龙物群和关山动物群. 昆明: 云南科技出版社, 2008. 1-134
[12]  15 胡世学, 朱茂炎, Steiner M, 等. 关山生物群构成及埋藏学研究进展. 中国科学: 地球科学, 2010, 40: 1115-1124
[13]  16 赵元龙. 凯里生物群-5.08亿前的海洋生物. 贵阳: 贵州科技出版社, 2011. 162-163
[14]  20 陈良忠, 罗惠麟, 胡世学, 等. 云南东部早寒武世澄江动物群. 昆明: 云南科技出版社, 2002. 1-199
[15]  21 Lieberman B S. A new soft-bodied fauna: The Pioche Formation of Nevada. J Paleontol, 2003, 77: 674-690
[16]  22 Briggs D E G. Anomalocaris, the largest known Cambrian arthropod. Palaeontology, 1979, 22: 631-664
[17]  3 Hou X G, Bergstr?m J, Ahlberg P. Anomalocaris and other large animals in the Lower Cambrian Chengjiang fauna of southwest China. GFF, 1995, 117: 163-183
[18]  4 Collins D. The 'evolution' of Anomalocaris and its classification in the arthropod class Dinocarida (nov.) and order Radiodonta (nov.). J Paleontol, 1996, 70: 280-293
[19]  8 Daley A C, Peel J S. A possible anomalocaridid from the Cambrian Sirius Passet Lagerst?tte, North Greenland. J Paleontol, 2010, 84: 352-355
[20]  17 黄迪颖, 王媛媛, 高健, 等. 奇虾类前附肢化石在河北唐山地区寒武系馒头组的发现. 古生物学报, 2012, 51: 411-415
[21]  18 Hou X G, Aldridge R J, Bergstr?m J, et al. The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life. Oxford: Blackwell Publishing, 2004. 1-233
[22]  19 Hou X G, Bergstr?m J, Yang J. Distinguishing anomalocaridids from arthropods and priapulids. Geol J, 2006, 41: 259-269
[23]  23 Vannier J, Chen J Y. Early Cambrian food chain: New evidence from fossil aggregates in the Maotianshan Shale biota, SW China. Palaios, 2005, 20: 3-26
[24]  24 Nedin C. Anomalocaris predation on nonmineralized and mineralized trilobites. Geology, 1999, 27: 987-990
[25]  25 Babcock L. Trilobites in Paleozoic predator-prey systems, and their role in reorganization of early Paleozoic ecosystems. In: Kelley P H, Kowalewski M, Hansen T A, eds. Predator-prey Interactions in the Fossil Record. New York: Kluwer Academic/Plenum Press, 2003. 55-92

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133