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2009 |
Paleontology and Microfacies of the Serpukhovian in the Verkhnyaya Kardailovka Section, South Urals, Russia: potential candidate for the GSSP for the Viséan-Serpukhovian boundary.(S.V.Nikolaeva, et al., for full authors see Note.
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Ruzhencev & Bogoslovskaya |
1971a |
Namiurskii etap v evoliutsii ammonodei. Rannenamiurskie ammonoidei.
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