| mhorn | Дата: Wednesday, 16.09.2015, 19:44 | Сообщение # 1 |
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| Rogov M.A., Baraboshkin E.Yu., Guzhikov A.Yu., Efimov V.M., Kiselev D.N., Morov V.P., Gusev V.V. (2015) The Jurassic-Cretaceous boundary in the Middle Volga region. Field guide to the International meeting on the Jurassic/Cretaceous boundary. September 7-13, 2015, Samara (Russia). Samara: Samara State Technical University, 2015. 130 p.
http://cretaceous.ru/files....rs3.pdf
The field guide provides data on the Jurassic/Cretaceous boundary in the Middle Volga region, including information on ammonite zonal and infrazonal biostratigraphy, paleomagnetostratigraphy and three sections of the boundary interval – Gorodischi (lectostratotype of the Volgian Stage), Kashpir (Kashpurian Stage stratotype) and Mar’evka.
Middle Jurassic - Lower Cretaceous ammonites & aptychi
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