|mhorn||Дата: Saturday, 14.12.2013, 08:29 | Сообщение # 1|
|Yeh K., Pessagno E.A. (2013) Upper Bathonian (Middle Jurassic) Radiolarians from Snowshoe Formation, east-central Oregon, USA // Collection and Research. Vol.26. P. 51-175. |
This report represents the first comprehensive analysis of uppermost Bathonian (Middle Jurassic) Radiolaria from the South Fork Member of Snowshoe Formation, east-central Oregon. A total of 238 morphotypes are illustrated, among which 3 new genera (Corona, Nidus and Secretacapsa) and 24 new species are described. The results of this study provide a basic foundation for all future studies of Radiolaria from the Boreal upper Bathonian strata of the Snowshoe Formation. In addition, these data should further document the faunal change that occurred in the Izee Terrane from the Toarcian Tethyan Realm to the Bathonian Boreal Realm. Finally, these data may assist in the development of a more precise radiolarian zonation for the Middle Jurassic.
Middle Jurassic - Lower Cretaceous ammonites & aptychi