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在墨西哥的奇克苏鲁布撞击坑中发现的古世 - 世的类动物. 第二部分:血管精子花粉

Vann Smith^1,2, Sophie Warny^1,2, David M Jarzen³

¹Department of Geology and Geophysics, LSU, Baton Rouge, LA, USA.

Palynology. American Association of Stratigraphic Palynologists

|August 20, 2024

概括

在K-Pg大灭绝后的花恢复是详细使用来自奇克苏鲁布撞击坑的花粉分析. 这项研究揭示了早期古世到最早的欧世植物生活和新的血管精子花粉物种.

科学领域:

古生物学的古生物学
帕利诺学 (Palynology) 是一个临床学科.
地质地质地质地质地质地

背景情况:

奇克苏鲁布撞击事件标志着白纪的结束,导致大规模灭绝.
IODP探险364号探测了奇克苏鲁布撞击坑的峰环.
了解撞击后恢复对于重建地球历史至关重要.

研究的目的:

为了从IODP 364核心分析陆地神器学.
在撞击坑内重建K-Pg大灭绝后的花恢复.
为了记录血管精子花粉,并描述新的种类.

主要方法:

核心样本的陆地palynological分析.
高分辨率的约会古世到最早的欧世 (Ypresian) 段.
对花粉和子进行系统的分类描述.

主要成果:

获得了高分辨率的古生物学记录,从早期的旧世到最早的新世.
这项研究提供了第一份从奇克苏鲁布撞击坑内恢复花的记录.
丰富的血管精子花粉,包括 *Chenopodipollis * sp. 发现,在PETM和Ypresian期间恢复的增加.
描述了一个新属 (*Scabrastephanoporites*) 和五个新物种.

结论:

IODP 364核心提供了对冲击后生态系统的独特窗口.
奇克苏鲁布火山口内的花恢复始于古世早期.
鉴定到的花粉组合为我们提供了关于古世和新世植物群落和生物分层学的见解.

关键词:

纪 - 古纪的边界.伊欧时代 (Eocene) 的一个时期.墨西哥墨西哥墨西哥墨西哥在PETM中,PETM是PETM.旧生代 (Paleocene) 的一个时期.

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