A Jiangshanian (Cambrian; Furongian) trilobite fauna from the Cow Head Group, western Newfoundland

被引：1
|
作者：
Westrop, Stephen R. [1 ,2 ]
Eoff, Jennifer D. [3 ]
机构：
[1] Univ Oklahoma, Oklahoma Museum Nat Hist, Norman, OK 73072 USA
[2] Univ Oklahoma, Sch Geosci, Norman, OK 73072 USA
[3] Univ Oklahoma, Sch Geosci, Norman, OK 73019 USA
来源：
CANADIAN JOURNAL OF EARTH SCIENCES | 2023年 / 60卷 / 08期
关键词：
Cambrian; Furongian; Jiangshanian; Trilobita; Cow Head Group; MICROBIAL REEFS; SERIES; 3; IRVINGELLA; REVISION; BASE;
D O I：
10.1139/cjes-2023-0036
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Three shelf-derived boulders in debris flow conglomerates of the Downes PointMember of the Shallow Bay Formation of western Newfoundland yielded the first record of an Upper Cambrian shelf-margin trilobite fauna from the Elvinia Zone (Steptoean; Jiangshanian) in eastern North America. The fauna is dominated by the "catillicephalid" Buttsia Wilson, 1951, and resembles trilobite biofacies from microbial buildups in the Gatesburg Formation of Pennsylvania. It is correlative with the Cliffia latagenae Subzone, which is the youngest Steptoean biostratigraphic unit in the Gatesburg. New taxa are Triorygma burkhalteri gen. et sp. nov. and Buttsia trema sp. nov.
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页码：1244 / 1264
页数：21
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