ArticleNature communications2024
Late Cretaceous ammonoids show that drivers of diversification are regionally heterogeneous.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Global patterns are key to understanding macroevolution.Communications biology · 2026Article
- Rapid mid-Cretaceous diversification of squid and cuttlefish preceded radiation into coastal niches.Nature ecology & evolution · 2026Article
- The oldest sepioid cephalopod from the Cretaceous discovered by Digital fossil-mining with zero-shot learning AI.Communications biology · 2026Article
- The fate of South America's endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
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6 authors.
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Abstract
Palaeontologists have long sought to explain the diversification of individual clades to whole biotas at global scales. Advances in our understanding of the spatial distribution of the fossil record through geological time, however, has demonstrated that global trends in biodiversity were a mosaic of regionally heterogeneous diversification processes. Drivers of diversification must presumably have also displayed regional variation to produce the spatial disparities observed in past taxonomic richness. Here, we analyse the fossil record of ammonoids, pelagic shelled cephalopods, through the Late Cretaceous, characterised by some palaeontologists as an interval of biotic decline prior to their total extinction at the Cretaceous-Paleogene boundary. We regionally subdivide this record to eliminate the impacts of spatial sampling biases and infer regional origination and extinction rates corrected for temporal sampling biases using Bayesian methods. We then model these rates using biotic and abiotic drivers commonly inferred to influence diversification. Ammonoid diversification dynamics and responses to this common set of diversity drivers were regionally heterogeneous, do not support ecological decline, and demonstrate that their global diversification signal is influenced by spatial disparities in sampling effort. These results call into question the feasibility of seeking drivers of diversity at global scales in the fossil record.
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