REDESCRIPTION OF HEXACONULARIA HE AND YANG, 1986 (LOWER CAMBRIAN, SOUTH CHINA): IMPLICATIONS FOR THE AFFINITIES OF CONULARIID-LIKE SMALL SHELLY FOSSILS
Van Iten, Heyo1; Maoyan, Zhu (朱茂炎)2; Li, Guoxiang (李国祥)2
2010
发表期刊PALAEONTOLOGY
ISSN0031-0239
卷号53页码:191-199
摘要

Hexaconularia, a Lower Cambrian small shelly fossil (SSF) that has been allied with conulariids and scyphozoan cnidarians, is redescribed and refigured. A salient feature of this monospecific genus is the presence of distinct apical and abapical regions. The apical region probably represents an embryonic shell that apparently lacked a basal attachment structure. Comparisons of this feature with the apical end of the smallest known conulariids and with conulariids terminating in an apical wall (schott) reveal substantial differences in structure and ornamentation. Differences in apical anatomy between conulariids and Arthrochites, possibly the nearest SSF relative of Hexaconularia, are also apparent. Comparisons of Hexaconularia with Punctatus, an SSF taxon showing distinct apical and abapical regions in both posthatching specimens and prehatching embryos, suggest that the early development of Hexaconularia was direct. These results have important implications for hypotheses of a conulariid/scyphozoan affinity for Hexaconularia and its possible SSF relatives, and they suggest that Hexaconularia-bearing strata may yield prehatching embryos of this genus.

关键词Small Shelly Fossils Lower Cambrian Conulariids Scyphozoans Hexaconularia Punctatus
DOI10.1111/j.1475-4983.2009.00925.x
语种英语
关键词[WOS]Sphenothallus-hall ; Lesser Himalaya ; Morphology ; Boundary ; Patterns ; Embryos ; Russia
资助项目Hanover College Faculty Development Committee (HVI) ; National Natural Science Foundation of China[40725005] ; National Natural Science Foundation of China[40572006] ; National Natural Science Foundation of China[40872012] ; Ministry of Science and Technology of China[2006CB806401] ; State Key Laboratory of Palaeobiology and Stratigraphy (China)
WOS研究方向Paleontology
WOS类目Paleontology
WOS记录号WOS:000273688000009
项目资助者Hanover College Faculty Development Committee (HVI) ; National Natural Science Foundation of China ; Ministry of Science and Technology of China ; State Key Laboratory of Palaeobiology and Stratigraphy (China)
出版者WILEY-BLACKWELL PUBLISHING, INC
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/388
专题中国科学院南京地质古生物研究所
其他
通讯作者Van Iten, Heyo
作者单位1.Hanover Coll, Dept Geol, Hanover, IN 47243 USA
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, LPS, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714
Van Iten, Heyo,Maoyan, Zhu ,Li, Guoxiang . REDESCRIPTION OF HEXACONULARIA HE AND YANG, 1986 (LOWER CAMBRIAN, SOUTH CHINA): IMPLICATIONS FOR THE AFFINITIES OF CONULARIID-LIKE SMALL SHELLY FOSSILS[J]. PALAEONTOLOGY,2010,53:191-199.
APA Van Iten, Heyo,Maoyan, Zhu ,&Li, Guoxiang .(2010).REDESCRIPTION OF HEXACONULARIA HE AND YANG, 1986 (LOWER CAMBRIAN, SOUTH CHINA): IMPLICATIONS FOR THE AFFINITIES OF CONULARIID-LIKE SMALL SHELLY FOSSILS.PALAEONTOLOGY,53,191-199.
MLA Van Iten, Heyo,et al."REDESCRIPTION OF HEXACONULARIA HE AND YANG, 1986 (LOWER CAMBRIAN, SOUTH CHINA): IMPLICATIONS FOR THE AFFINITIES OF CONULARIID-LIKE SMALL SHELLY FOSSILS".PALAEONTOLOGY 53(2010):191-199.
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