Gradual Dinosaur Extinction and Simultaneous Ungulate Radiation in the Hell Creek Formation
| Autor: | Sloan, Robert E., Rigby, J. Keith, Van Valen, Leigh M., Gabriel, Diane |
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| Zdroj: | Science, 1986 May 01. 232(4750), 629-633. |
| Databáze: | JSTOR Journals |
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