期刊
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
卷 400, 期 -, 页码 17-27出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.palaeo.2013.05.018
关键词
Mosasaur; Biodiversity; Evolution; Extinction
资金
- Vida Foundation and LS Filmes
- Petroleum Research Fund of the American Chemical Society
- National Geographic Society
- Institute for the Study of Earth and Man at SMU
- Royal Netherlands Embassy in Luanda
- Esso Angola
- TAP Airlines
- KLM Royal Dutch Airlines
- Maersk and Damco shipping
Mosasaurs are marine squamates with a 32.5 million-year history from their appearance at 98 Ma to their extinction at the K-Pg boundary (65.5 Ma). Using a database of 43 generic and 94 species-level taxa, we compare the taxonomic diversity and patterns of morphological disparity in mosasaurs with sea level, sea surface temperature, and stable carbon isotope curves for the Upper Cretaceous to explore factors that may have influenced their evolution. No single factor unambiguously accounts for all radiations, diversification, and extinctions: however, the broader patterns of taxonomic diversification and morphological disparity point to niche differentiation in a fishing up scenario under the influence of bottom-up selective pressures. The most likely driving force in mosasaur evolution was high productivity in the Late Cretaceous, driven by tectonically controlled sea levels and climatically controlled ocean stratification and nutrient delivery. When productivity collapsed at the end of the Cretaceous, coincident with bolide impact, mosasaurs became extinct. (C) 2013 Elsevier B.V. All rights reserved.
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