| mhorn | Дата: Wednesday, 20.08.2014, 19:06 | Сообщение # 1 |
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| Pieńkowski G. (2014) The first Early Jurassic ammonite find in central Poland // Volumina Jurassica, Vol. XII. No. 1. P.99–104.
Pdf http://voluminajurassica.org/index.p....119
Tragophylloceras cf. loscombi (Sowerby) has been found in the Kaszewy 1 borehole (central Poland), in the Upper Pliensbachian strata (Margaritatus Zone, Subnodosus Subzone), assigned to the Drzewica Formation. Hitherto, all ammonite finds in the epicontinental Lower Jurassic in Poland have been restricted to Western Pomerania (NW Poland). This find points to a wider extent of the transgressive event occurring in the late Margaritatus Zone, following widespread regression at the beginning of this zone. Rapid and pronounced sea level changes in the early Late Pliensbachian confirms the hypothesis linking these changes with glacioeustasy
Middle Jurassic - Lower Cretaceous ammonites & aptychi
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