安徽贵池—青阳地区红花园组Calathium化石 |
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引用本文: | 章森桂 李昌文. 安徽贵池—青阳地区红花园组Calathium化石[J]. 地层学杂志, 1991, 15(4): 291-293,T001 |
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作者姓名: | 章森桂 李昌文 |
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摘 要: | <正> 笔者在安徽贵池—青阳—带下奥陶统红花园组发现扬子地台红花园组的常见化石Calathium(中译名称瓶筐石),其分类位置存在争议:一种归于海绵动物,一种归于藻类,另一种认为与古杯类、串管海绵类一起归于Archaeata低等多细胞生物)。贵池—青阳地区的Calathium化石采自贵池桃坡老屋里和青阳五溪马家岭红花园组,种类虽不
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关 键 词: | 红花园组 早奥陶世 化石 瓶筐石 |
Calathium from the Honghuayuan Formation in the Guichi-Qingyang area, Anhui |
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Abstract: | A great number of specimens of Calathium were collected from the upper part of the Honghuayuan Formation in the Guichi-Qingyang area of Anhui.They are associated with nautiloid cephalopods Coreanoceras and Hopeiceras, brachiopods Tritoichia and Paurothis, gastropod Lesueurilla, sponge Arachaeoscyphia, echinoderm Cyclocyclicus, alga Nuia and cono-donts.The beds containing Calathium are assigned to the upper subzone of the Serratogna-thus 'divenus Zone and correspond to the Didymograptus filiformis Zone.Available data indicate that Calathium was one of the chief reef-building organisms during the Lower Paleozoic and had built a lot of reefs or organic builtups in many places of the world such as Kaili and Duyun of Guizhou, SW Hubei, Taxas and Oklahoma, indicating a tropical or subtropical environment with normal sdalinity and rich food.It is suggested that during that time the Guichi-Qingyang area was just being situated on the southeastern edge of the Yangtze platform. |
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