| 21. | By using stratigraphic principles, absolute ages in geologic time.
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| 22. | 20 discrete finds concentrations in similar stratigraphic position were recorded at Niederbieber.
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| 23. | The field is a stratigraphic trap, basin-centered gas field.
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| 24. | But what of stratigraphic discontinuities as manifestations of nondeposition and accompanying erosion?
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| 25. | Sauropod tracks are also known from the same stratigraphic layer.
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| 26. | The cave sits above the stratigraphic sequence of Palaeolithic and Neolithic origin.
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| 27. | Still, this is disputed in the light of apparently contradictory stratigraphic evidence.
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| 28. | It is present in stratigraphic zones 2-5.
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| 29. | It is present in stratigraphic zones 4 and 5 of the Morrison Formation.
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| 30. | Smaller orders in stratigraphic cycles have also been proposed.
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