Neogyroporella? gawlicki n.sp., a New Dasycladale from the Upper Jurassic–Lower Cretaceous “Lärchberg Formation” of the Northern Calcareous Alps, Austria
نویسنده
چکیده
The Upper Jurassic to Lower Cretaceous shallow water platform carbonates of the Northern Calcareous Alps (Plassen Formation, “Lärchberg Formation”) and the resedimented deposits of the latter within basinal series (Barmstein Limestone, Tressenstein Limestone) are currently under re-investigation (SCHLAGINTWEIT et al., 2003; GAWLICK et al., 2005). This shallow water development is directly linked to tectonic activity in the Western Tethyan domain causing early nappe formations (GAWLICK et al., 1999; FRISCH & GAWLICK, 2003). Already in the Middle Jurassic, the geodynamic and sedimentological framework was mainly governed by the closure of parts of the Tethyan ocean leading to the first thrust nappes and the formation of a rise-andbasin pattern (e.g. GAWLICK et al., 1999). Starting in the southern parts of the Northern Calcareous Alps, the compressional tectonic regime governed uplift processes producing shallowing-upwards successions from basinal to external and finally internal carbonate platform deposits. In the same way as there were different Neogyroporella? gawlicki n.sp., a New Dasycladale from the Upper Jurassic–Lower Cretaceous “Lärchberg Formation” of the Northern Calcareous Alps, Austria
منابع مشابه
Gosavisiphon gen. nov. based on Halimeda paucimedullaris SCHLAGINTWEIT & EBLI, 1998: a remarkable macroalga (Udoteaceae?) from the Late Cretaceous of the Northern Calcareous Alps, (Austria and Germany), with affi nites to Late Palaeozoic and Late Triassic phylloids
The new genus Gosavisiphon with the type-species Halimeda paucimedullaris SCHLAGINTWEIT & EBLI, 1998, tentatively referred to the Udoteaceae, is described from the Late Cretaceous (Middle/Late Cenomanian-Santonian) of the Branderfl eck Formation and the Lower Gosau Subgroup of the Northern Calcareous Alps (Austria, Germany). It is a plurimillimetric to pluricentimetric marine, hard-substrate dw...
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