显生宙化石产地的基岩地质图预测

IF 2.6 2区地球科学 Q2 BIODIVERSITY CONSERVATION

Paleobiology Pub Date : 2023-01-27 DOI:10.1017/pab.2022.46

Shan Ye, S. Peters

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引用次数: 1

摘要

摘要为了重建宏观进化模式和测试地球和生命科学中的广泛假设，地理上明确的、分类上解析的化石出现是必要的。古生物学数据库（PBDB）中化石出现的空间和时间分布的异质性可归因于几个不同的因素，包括生物群落之间的更替、古生物学研究强度的社会经济差异，以及沉积矿床分布和化石产量的地质控制。在这里，我们使用Macrostrat的全球地质图数据和PBDB中的化石采集的交叉点来评估潜在的含化石、地表沉积记录产生化石的程度。我们发现地质图面积与化石出现的数量之间存在显著和中等强度的正相关性。这种相关性是一致的，无论地图单元年龄和装箱协议如何，除非在周期级别；新近纪和第四纪的非海洋地图单元覆盖了大片区域，产生的矿点比预期的要少。北美和欧洲的沉积记录显示，每个沉积区的化石产出量远高于世界其他大部分地区类似年代的矿床。然而，沉积矿床面积和年龄的地理差异导致了对化石出现的区域性不同期望。使用北美和欧洲地表沉积单元的采样作为其他地区地表沉积矿床可采储量的预测指标，我们发现全球其他地区的采样率约为PBDB中的45%。利用基岩的年龄和面积以及北美和欧洲的采样作为预测的基础，我们估计需要将这些地区以外的639000多个矿点添加到PBDB中，以实现采样的全球地质平衡。总的来说，新的陆地化石的出现预计将对我们对宏观进化模式的理解产生最大的影响。

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Bedrock geological map predictions for Phanerozoic fossil occurrences

Abstract. Geographically explicit, taxonomically resolved fossil occurrences are necessary for reconstructing macroevolutionary patterns and for testing a wide range of hypotheses in the Earth and life sciences. Heterogeneity in the spatial and temporal distribution of fossil occurrences in the Paleobiology Database (PBDB) is attributable to several different factors, including turnover among biological communities, socioeconomic disparities in the intensity of paleontological research, and geological controls on the distribution and fossil yield of sedimentary deposits. Here we use the intersection of global geological map data from Macrostrat and fossil collections in the PBDB to assess the extent to which the potentially fossil-bearing, surface-expressed sedimentary record has yielded fossil occurrences. We find a significant and moderately strong positive correlation between geological map area and the number of fossil occurrences. This correlation is consistent regardless of map unit age and binning protocol, except at period level; the Neogene and Quaternary have non-marine map units covering large areas and yielding fewer occurrences than expected. The sedimentary record of North America and Europe yields significantly more fossil occurrences per sedimentary area than similarly aged deposits in most of the rest of the world. However, geographic differences in area and age of sedimentary deposits lead to regionally different expectations for fossil occurrences. Using the sampling of surface-expressed sedimentary units in North America and Europe as a predictor for what might be recoverable from the surface-expressed sedimentary deposits of other regions, we find that the rest of the globe is approximately 45% as well sampled in the PBDB. Using age and area of bedrock and sampling in North America and Europe as a basis for prediction, we estimate that more than 639,000 occurrences from outside these regions would need to be added to the PBDB to achieve global geological parity in sampling. In general, new terrestrial fossil occurrences are expected to have the greatest impact on our understanding of macroevolutionary patterns.

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来源期刊

Paleobiology 地学-古生物学

CiteScore

5.30

自引率

3.70%

发文量

审稿时长

>12 weeks

期刊介绍： Paleobiology publishes original contributions of any length (but normally 10-50 manuscript pages) dealing with any aspect of biological paleontology. Emphasis is placed on biological or paleobiological processes and patterns, including macroevolution, extinction, diversification, speciation, functional morphology, bio-geography, phylogeny, paleoecology, molecular paleontology, taphonomy, natural selection and patterns of variation, abundance, and distribution in space and time, among others. Taxonomic papers are welcome if they have significant and broad applications. Papers concerning research on recent organisms and systems are appropriate if they are of particular interest to paleontologists. Papers should typically interest readers from more than one specialty. Proposals for symposium volumes should be discussed in advance with the editors.