The taxonomy and palaeobiogeography of small chorate dinoflagellate cysts from the Late Cretaceous to Quaternary of Antarctica
The taxonomy and palaeobiogeography of small chorate dinoflagellate cysts from the Late Cretaceous to Quaternary of Antarctica
复制标题
南极洲晚白垩世至第四纪小型脊索甲藻包囊的分类和古生物地理学
DOI：
10.1080/01916122.2012.750898
复制
发表时间：
2013
期刊：
影响因子：
1.5
通讯作者：
Bowman V
中科院分区：
文献类型：
--
作者：
Bowman V
小型脊甲甲藻包囊常见于南极边缘周围的上白垩纪至第四纪沉积序列中。整个南部高古纬度地区围绕甲藻包囊和类似形态的原虫的分类学混乱迄今为止限制了对其古生态学意义的研究。本研究旨在解决分类学问题，并对甲藻囊肿进行新的评估。介绍了对南极半岛西摩岛洛佩斯德贝托达诺组新物质的详细形态学研究。这些甲藻包囊被鉴定为棒状圆球藻 (Impletosphaeridium clavusemend)。十一月它们的总体形态和在詹姆斯·罗斯盆地的大量数量强烈暗示着甲藻的大量繁殖。这种情况意味着与极地地区的现代甲藻包囊有相似之处。
Small chorate dinoflagellate cysts are common in Upper Cretaceous to Quaternary sedimentary successions around the Antarctic margin. Taxonomic confusion surrounding dinoflagellate cysts and acritarchs of similar morphology throughout the southern high palaeolatitudes has hitherto limited investigation of their palaeoecological significance. This study aims to solve the taxonomic problems, and to allow a new assessment of dinoflagellate cyst acmes. A detailed morphological study of new material from the López de Bertodano Formation of Seymour Island, Antarctic Peninsula, is presented. These dinoflagellate cysts are identified asImpletosphaeridium clavusemend. nov. Their gross morphology and their vast abundances in the James Ross Basin are strongly suggestive of dinoflagellate blooms. This scenario implies similarities to modern dinoflagellate cysts from the polar regions.