| 1. | In 1983 he was appointed Reader in Karoo Biostratigraphy by the university.
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| 2. | He also elaborated on his earlier research into mosasaur biostratigraphy.
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| 3. | Russell also published additional information and speculation on mosasaur biostratigraphy.
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| 4. | Biostratigraphy or paleontologic stratigraphy is based on fossil evidence in the rock layers.
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| 5. | It has a cosmopolitan distribution and is an important index fossil in biostratigraphy.
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| 6. | *Williston published notable early observations on mosasaur biostratigraphy.
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| 7. | The interchange is visible from observation of both biostratigraphy and nature ( neontology ).
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| 8. | It is an important index fossil in biostratigraphy.
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| 9. | Additionally, if there is a succession of preserved fossils, biostratigraphy can be used.
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| 10. | They are widely used in biostratigraphy.
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मोबाइल