Permian plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia): I. Genera Pecopteris and Asterotheca
Permian plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia): I. Genera Pecopteris and Asterotheca
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DOI：
10.1590/s0001-37652004000100010
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发表时间：
2004-03
影响因子：
1.3
通讯作者：
C. Vieira;R. Iannuzzi;M. Guerra-Sommer;E. Díaz-Martínez;G. Grader
中科院分区：
文献类型：
--
作者：
C. Vieira;R. Iannuzzi;M. Guerra-Sommer;E. Díaz-Martínez;G. Grader
属于形态发生属舌羊角属、胸毛属和星壳属的植物化石是在的的喀喀湖东南岸（玻利维亚高原北部）圣巴勃罗·德·提基纳镇附近的楚塔尼组（的的喀喀群）上部采集的。在这里，我们报告了在此地点发现的蕨类植物叶子的分析。鉴定出三种胸蕨叶：Pecopterisdolianitii Rohn 和 Rosler，P. cf. P. cadeadensis Rohn 和 Rosler，以及 P. cf. P.pedrasica 阅读。所有这些物种通常都在巴西南部巴拉那盆地的二叠纪沉积物中发现。尽管材料保存较差，但仍可以对可繁殖的标本进行研究并确定为Asterotheca sp。简要分析了这一新发现的古环境和古生态学意义。
Fossil plants belonging to the morphogenera Glossopteris, Pecopteris and Asterotheca were collected from the upper part of the Chutani Formation (Titicaca Group), near the town of San Pablo de Tiquina, on the southeastern shore of Lake Titicaca (northern Altiplano, Bolivia). Here we report the analysis of fern-type foliage found at this location. Three species of pecopterid fronds are identified: Pecopterisdolianitii Rohn and Rosler, P. cf. P. cadeadensis Rohn and Rosler, and P. cf. P. pedrasica Read. All these species are typically found in Permian deposits of the Parana Basin in southern Brazil. Despite the poor preservation of the material, a fertile specimen could be studied and was determined asAsterotheca sp. The paleoenvironmental and paleoecological implications of this new find are briefly analyzed.