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Gradual Dinosaur Extinction and Simultaneous Ungulate Radiation in the Hell Creek Formation
Abstract
Dinosaur extinction in Montana, Alberta, and Wyoming was a gradual process that began 7 million years before the end of the Cretaceous and accelerated rapidly in the final 0.3 million years of the Cretaceous, during the interval of apparent competition from rapidly evolving immigrating ungulates. This interval involves rapid reduction in both diversity and population density of dinosaurs. The last dinosaurs known are from a channel that contains teeth of Mantuan mammals, seven species of dinosaurs, and Paleocene pollen. The top of this channel is 1.3 meters above the likely position of the iridium anomaly, the Cretaceous/Tertiary boundary.
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Cited by
Founder takes all: density-dependent processes structure biodiversity
Waters, J. M., Fraser, C. I., & Hewitt, G. M. (2013) · Trends in Ecology & Evolution · doi:10.1016/j.tree.2012.08.024 · Cited by 454
The Cretaceous-Tertiary biotic transition
MACLEOD, N., RAWSON, P. F., FOREY, P. L., BANNER, F. T., BOUDAGHER-FADEL, M. K., BOWN, P. R., BURNETT, J. A., CHAMBERS, P., CULVER, S., EVANS, S. E., et al. (1997) · Journal of the Geological Society · doi:10.1144/gsjgs.154.2.0265 · Cited by 294
Dinosaur morphological diversity and the end-Cretaceous extinction
Brusatte, S. L., Butler, R. J., Prieto-Márquez, A., & Norell, M. A. (2012) · Nature Communications · doi:10.1038/ncomms1815 · Cited by 93
Evans, D. C., Larson, D. W., & Currie, P. J. (2013) · Naturwissenschaften · doi:10.1007/s00114-013-1107-5 · Cited by 63
Metadata
- Authors
- Sloan, R. E., Rigby, J. K., Van Valen, L. M., & Gabriel, D.
- Venue
- Science
- Published
- 1986-05-02
- Volume
- 232
- Issue
- 4750
- Pages
- 629-633
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2008970847
- Cited by
- 166
- References
- 0
- FWCI
- 14.98
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sloan, R. E., Rigby, J. K., Van Valen, L. M., & Gabriel, D. (1986). Gradual Dinosaur Extinction and Simultaneous Ungulate Radiation in the Hell Creek Formation. Science. https://doi.org/10.1126/science.232.4750.629
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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
