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Author - title
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| original | Middle Jurassic | USSR(Belorussian SSR) | Kruchinina,N.V. et al. Morphology of spores of some representatives of the Infra-Turma Laevigati. (In: Paleomikrofitologicheskie issledovaniya dlya tselei stratigrafii. L.A. Panova, editor.) | 1980 | |
| details | Julian | Hungary | GгczЎn,F. et al. Tuvalian sequences of the Balaton highland and the Zsambek Basi Part I: Litho, Bio and chronostratigraphic subdivision | 1996 |