A BANGIOPHYTE RED ALGA FROM THE PROTEROZOIC OF ARCTIC CANADA

被引:145
作者
BUTTERFIELD, NJ [1 ]
KNOLL, AH [1 ]
SWETT, K [1 ]
机构
[1] UNIV IOWA,DEPT GEOL,IOWA CITY,IA 52242
关键词
D O I
10.1126/science.11538072
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Silicified peritidal carbonate rocks of the 1250- to 750-million-year-old Hunting Formation, Somerset Island, arctic Canada, contain fossils of well-preserved bangiophyte red algae. Morphological details, especially the presence of multiseriate filaments composed of radially arranged wedge-shaped cells derived by longitudinal divisions from disc-shaped cells in uniseriate filaments, indicate that the fossils are related to extant species in the genus Bangia. Such taxonomic resolution distinguishes these fossils from other pre-Edicaran eukaryotes and contributes to growing evidence that multicellular algae diversified well before the Ediacaran radiation of large animals.
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收藏
页码:104 / 107
页数:4
相关论文
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