کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4749986 | 1360629 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New bradoriids from the Lower Cambrian Yanwangbian formation of southern Shaanxi Province, Central China
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فسیل شناسی
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چکیده انگلیسی
Located in the northwest margin of the South China Block during the Cambrian, the Lower Cambrian Yanwangbian Formation of southern Shaanxi Province, Central China, has yielded a diverse fossil assemblage that includes abundant bradoriid arthropods, inarticulate brachiopods, hyolithids, trilobites, priapulids, lightly sclerotized arthropods, and ichnofossils. This assemblage represents the biodiversity of Early Cambrian marine communities in South China. Here we describe two new bradoriids from this stratigraphic unit, Sanlangella xixiangensis n. gen. et n. sp. and Kunmingella pentagona n. sp. On the basis of its carapace morphology, S. xixiangensis is assigned to the family Comptalutidae Ãpik. The specimens of this species are preserved either in clay minerals or in calcium phosphate. Scanning electron microscopy analysis of phosphatized specimens reveals the microscopic reticulate surface ornaments that form a polygonal pattern on the anterodorsal node, around the base of mid-dorsal spine and along the lateroadmarginal rim. K. pentagona is described as the third species of this preexisting genus, based on the eight specimens with a distinctive pentagonal outline, a prominent anterodorsal curve and an anterodorsal sulcus.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeoworld - Volume 17, Issue 2, June 2008, Pages 102-107
Journal: Palaeoworld - Volume 17, Issue 2, June 2008, Pages 102-107
نویسندگان
Yu Liu, Xing-Liang Zhang, Wei Liu, Qian Zhang,