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From
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To
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Geolocation
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Author - title
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Year
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| details | Early Callovian | Europe(N.Europe) | Christopher,R.A. et al. Introduction to biostratigraphy and time scales. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) | 1996 | |
| details | Nd | Nd | Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. | 1998 | |
| details | Callovian | Canada(N.S.Offshore) | Wade,J.A. et al. The geolgy of the southeastern margin of Canada. | 1990 |