DOI: 10.1016/j.palaeo.2013.08.003
论文题名: Composition and tiering of the Cambrian sponge communities
作者: Wu W. ; Zhu M. ; Steiner M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 398 起始页码: 86
结束页码: 96
语种: 英语
英文关键词: Cambrian
; Chengjiang fauna
; Palaeoecology
; Sponges
; Tiering
英文摘要: Sponges are dominant sessile suspension feeders in the Cambrian metazoan community; thus, sponge tiering and composition in the Cambrian communities will provide important information for elucidating the evolutionary history of the epifaunal community. Based on more than two thousand articulated sponge specimens from the early Cambrian Chengjiang fauna, the present study demonstrates that the Chengjiang sponge community is dominated by demosponges with a well-developed three-level tiering, consisting of 0-5. cm, 5-15. cm and 15-30. cm tiers. The majority of the sponges are restricted to the 0-15. cm tier, suggesting rich nutrients in the bottom seawater of the Cambrian ocean. Tiering in the Cambrian sponge communities is consistent and similar to that of the Ediacaran and Phanerozoic epifaunal communities, but the fourth tier (50-100. cm) in these latter communities is absent in the Cambrian communities. Demosponges dominate the shallow-water sponge communities and occur in all tiers. Hexactinellids are relatively rare and limited in the lower tiers in the shallow-water community, but dominate in the deep-water communities. The composition variation in the Cambrian sponge communities may be controlled by the differences in skeleton architecture between the Demospongiae and Hexactinellida. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69438
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, 210008, China; Institut für Geologische Wissenschaften, Freie Universität Berlin, Malteserstr. 74-100, D-12249 Berlin, Germany
Recommended Citation:
Wu W.,Zhu M.,Steiner M.. Composition and tiering of the Cambrian sponge communities[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,398