کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4750504 1642522 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pentadinium alabamensis: A new, unusual dinoflagellate from the early Oligocene of the Gulf Coast, Alabama, USA
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Pentadinium alabamensis: A new, unusual dinoflagellate from the early Oligocene of the Gulf Coast, Alabama, USA
چکیده انگلیسی

The Eocene–Oligocene Transition (EOT, ~ 34 Ma) marks the onset of major Antarctic ice sheets. The environmental consequences of the transition included major changes in e.g., sea level, temperature, and ocean circulation, complicating biostratigraphic correlations in this interval. Organic walled dinoflagellate cysts (dinocysts) however do show potential for EOT biostratigraphy, especially for ancient shallow marine settings.At St. Stephens Quarry, Alabama, USA, we found a new, extremely suturocavate dinocyst, Pentadinium alabamensis sp. nov., described herein. The range of the new species spans the critical EOT magnetosubchron C13n, making this taxon a useful biostratigraphic marker for this interval in the Gulf Coast region. The species appears to be associated with shallow marine, euryhaline conditions.


► We describe a new, unusual dinocyst from the Gulf Coast region.
► We name this dinocyst species Pentadinium alabamensis.
► Pentadinium alabamensis appears in the early Oligocene.
► Pentadinium alabamensis is probably associated with coastal, euryhaline settings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Review of Palaeobotany and Palynology - Volume 175, 1 May 2012, Pages 47–54
نویسندگان
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