| 11. | These layers are distinguishable as having many fossils and are important for the study of biostratigraphy.
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| 12. | He was an expert in the Tertiary of Washington State and specialized in biostratigraphy using Foraminifera.
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| 13. | The principle of faunal succession is used in biostratigraphy to determine each biostratigraphic unit, or biozone.
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| 14. | "' Dinosaur biostratigraphy "'studies the distribution of dinosaur taxa through rock layers.
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| 15. | Much of his work focused on linking mammalian fossils to specific geologic formations, a field known as biostratigraphy.
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| 16. | For the first 150 years of geology, biostratigraphy and superposition were the only means for determining the stratigraphers.
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| 17. | Chemostratigraphy also has acted as a check on other sub-fields of stratigraphy such as biostratigraphy and magnetostratigraphy.
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| 18. | Geologists employ biostratigraphy, the use of index fossils, for dating sedimentary rock units like the Coon Creek.
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| 19. | Another of this work's significant contributions to mosasaur biostratigraphy concerned the mosasaurs of the Smoky Hill Chalk.
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| 20. | The study of these fossils has facilitated important contributions to biostratigraphy, paleontology, taxonomies are found in the literature.
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