来自欧洲的Neogene chondrichthyans的多样化轨迹和古生物学地理
Jaime A Villafaña1, Marcelo M Rivadeneira2, Catalina Pimiento3
1Vienna Doctoral School of Ecology and Evolution, Vienna, Austria; Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O'Higgins, Avenida Viel 1497, 8370993 Santiago, Chile.
概括
欧洲的Neogene chondrichthyans经历了复杂的多样性变化,财富早期达到峰值,后来下降,受气候变化的影响. 许多属现在在全球和区域范围内已经灭绝.
科学领域:
- 古生物学的古生物学
- 海洋生物学 海洋生物学
- 宏观进化是如何发生的
背景情况:
- 欧洲新生代鱼 (鱼,鱼,滑板和金像鱼) 的化石记录丰富,但多样性和分布的宏观进化驱动因素仍然不清楚.
- 了解这些过程对于重建海洋生态系统动态和进化历史至关重要.
研究的目的:
- 在四个欧洲海洋地区调查Neogene chondrichthyans的多样化轨迹和古生物地理模式.
- 确定在新生代期间塑造氏体多样性和分布的宏观进化过程.
主要方法:
- 编译了4368个Neogene事件,包括102个属,41个家族和12个顺序的chondrichthyans.
- 分析大西洋,地中海,北海和帕拉特西斯地区的多样化率 (起源和灭绝) 和古生物地理模式.
- 多样化脉冲与全球和区域新一代气候事件 (变暖和变冷) 的相关性.
主要成果:
- 一般的丰富性在米奥生早期增加,随后帕拉提斯 (中期米奥生) 急剧下降,地中海和北海 (末期米奥生-普略生) 适度下降.
- 在所有地区,起源率在米奥森早期达到顶峰;灭绝脉冲因地区而异,特别是在Paratethys (米奥森晚期) 和地中海/北海 (米奥森晚期-普略森早期).
- 观察到显著的灭绝率,在新一代末期,27%的属在全球范围内灭绝,56%在区域范围内灭绝.
结论:
- 欧洲的Neogene chondrichthyan多样性表现出复杂的,区域特定的动态,受气候波动的影响.
- 尽管有海洋联系,但在欧洲各个地区仍然存在着不同的生物地理构成.
- 起源和灭绝的宏观进化脉冲与新一代气候变化事件密切相关.
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