ArticleProceedings. Biological sciences2017
Pre- versus post-mass extinction divergence of Mesozoic marine reptiles dictated by time-scale dependence of evolutionary rates.
Article in Proceedings. Biological sciences, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed.
- Global Assessment of Marine Reptiles and Mammals Using a Taxonomic Distinctness Tool: Implications for Their Conservation.Ecology and evolution · 2025Article
- Vertebral microstructure marks the emergence of pelagic ichthyosaurs soon after the End Permian Mass Extinction.Scientific reports · 2025Article
- The braincase anatomy ofPeerJ · 2025Article
- Postcranial anatomy ofSwiss journal of palaeontology · 2024Article
- Article
- Early Triassic ichthyopterygian fossils from the Russian Far East.Scientific reports · 2022Article
- Cranial anatomy ofPeerJ · 2021Article
- The anatomy of the palate in Early TriassicPeerJ · 2021Article
- Early high rates and disparity in the evolution of ichthyosaurs.Communications biology · 2020Article
- Article
- Effects of body plan evolution on the hydrodynamic drag and energy requirements of swimming in ichthyosaurs.Proceedings. Biological sciences · 2019Article
- The new ichthyosauriformPeerJ · 2019Article
- A prevalence ofPeerJ · 2019Article
- Separating sexual dimorphism from other morphological variation in a specimen complex of fossil marine reptiles (Reptilia, Ichthyosauriformes, Chaohusaurus).Scientific reports · 2018Article
- The rise of the ruling reptiles and ecosystem recovery from the Permo-Triassic mass extinction.Proceedings. Biological sciences · 2018Article
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5 authors.
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Abstract
The fossil record of a major clade often starts after a mass extinction even though evolutionary rates, molecular or morphological, suggest its pre-extinction emergence (e.g. squamates, placentals and teleosts). The discrepancy is larger for older clades, and the presence of a time-scale-dependent methodological bias has been suggested, yet it has been difficult to avoid the bias using Bayesian phylogenetic methods. This paradox raises the question of whether ecological vacancies, such as those after mass extinctions, prompt the radiations. We addressed this problem by using a unique temporal characteristic of the morphological data and a high-resolution stratigraphic record, for the oldest clade of Mesozoic marine reptiles, Ichthyosauromorpha. The evolutionary rate was fastest during the first few million years of ichthyosauromorph evolution and became progressively slower over time, eventually becoming six times slower. Using the later slower rates, estimates of divergence time become excessively older. The fast, initial rate suggests the emergence of ichthyosauromorphs after the end-Permian mass extinction, matching an independent result from high-resolution stratigraphic confidence intervals. These reptiles probably invaded the sea as a new ecosystem was formed after the end-Permian mass extinction. Lack of information on early evolution biased Bayesian clock rates.
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