Mobergellans (Problematica) from the Cambrian of Greenland, Siberia and Kazakhstan

被引：0
|
作者：
Christian B. Skovsted
机构：
[1] Uppsala Universitet,Department of Historical Geology and Palaeontology, Institute of Earth Science
来源：
Paläontologische Zeitschrift | 2003年 / 77卷 / 2期
关键词：
Problematica; Early Cambrian; Greenland; Siberia; Kazakhstan; Problematica; Unterkambrium; Grönland; Sibirien; Kasachstan;
D O I：
10.1007/BF03006952
中图分类号：
学科分类号：
摘要：
Mobergellans are disc-shaped problematic fossils of phosphatic composition bearing prominent muscle attachment structures on the presumed internal surface. They are found exclusively in sediments of Early Cambrian age, mainly from Laurentia, Baltica and Siberia. Type material ofDiscinella brastadi Poulsen, 1932 from North-East Greenland is re-studied and synonomised withDiscinella micans (Billings, 1871). Specimens from Siberia described asD. brastadi are re-assigned toMobergella hexactina n. sp., and specimens from Siberia described asMobergella radiolataBengtson, 1968 are re-assigned toM. sibirica n. sp.Aktugaia triangulaMis-Sarzhevsky, 1976 from Kazakhstan is redescribed, and its relationship to other mobergellans is discussed.
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页码：429 / 443
页数：14
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