Gosau Group

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Gosau Group Stratigraphic range: Late Cretaceous-Eocene ~90–50 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Rocks of the Gosau Group exposed in the Imster Muttekopf
Type	stratigraphic group
Sub-units	Eastern realm: Upper Gosau Subgroup - & Lower Gosau Subgroup - , & Grünbach Formations Western realm: Upper Gosau Subgroup - , & Lower Gosau Subgroup - , Schönleiten, , , Grabenbach, Hochmoos &
Overlies	Unconformity with folded and faulted Permian to Lower Cretaceous rocks
Thickness	2,200–2,600 m (7,200–8,500 ft)
Location
Coordinates	47°36′N 13°30′E / 47.6°N 13.5°E / 47.6; 13.5Coordinates: 47°36′N 13°30′E / 47.6°N 13.5°E / 47.6; 13.5
Approximate paleocoordinates	32°06′N 15°36′E / 32.1°N 15.6°E / 32.1; 15.6
Region	Central Europe
Country	Austria  Germany  Slovakia
Extent	, Limestone Alps
Gosau Group (Austria)

The Gosau Group (German: Gosau-Gruppe) is a geological stratigraphic group in Austria, Germany and western Slovakia whose strata date back to the Late Cretaceous to Eocene.^[1][2] It is exposed in numerous sporadic isolated basins within the Northern Calcareous Alps. It is divided into two subgroups, the Lower Gosau Subgroup which dates from the Turonian to Campanian, approximately 90 to 75 Ma and the Upper Gosau Subgroup which dates to the Santonian to Eocene, about 83.5 to 50 Ma. The formations within each subunit vary significantly between basins. The sequence is largely marine, but the Grünbach Formation represents a terrestrial deposit. Many of the units of the group are fossiliferous, typically providing marine fossils such as ammonites, though terrestrial remains including those of dinosaurs are known from the Grünbach Formation and Schönleiten Formation.

Fossil content[]

Among others, the following fossils have been described from the Gosau Group:^[3][4]

Dinosaurs
Genus	Species	Presence	Notes	Images
Struthiosaurus	S. austriacus	Niederösterreich, Austria	[5]
Mochlodon	M. suessi		A rhabdodontid iguanodont[5]
Rhadinosaurus	R. alcinus		Possible indeterminate ankylosaur remains[5]
"Crataeomus"	C. lepidophorus		Later found to be synonymous with Struthiosaurus austriacus[5]
	C. pawlowitschii		Later found to be synonymous with Struthiosaurus austriacus in partim[5]
"Danubiosaurus"	D. anceps		Later found to be indeterminate ankylosaurian and Struthiosaurus austriacus remains in partim[5] "Indeterminate fragments"[6]
"Hoplosaurus"	H. ischyrus		Later found to be synonymous with Struthiosaurus austriacus[5]
"Leipsanosaurus"	L. noricus		Later found to be synonymous with Struthiosaurus austriacus[5]
"Pleuropeltus"	P. suessi		Later found to be synonymous with Struthiosaurus austriacus in partim[5]
"Megalosaurus"	M. pannoniensis		Later found to be indeterminate theropod remains[5]
Ornithocheiridae indet.			[7][8]
Mollusca
Genus	Species	Presence	Notes	Images
"Trochactaeon"	T. conicus'	Nördliche Kalkalpen, Niederösterreich, Austria	Very common fossil, rock forming

See also[]

• List of dinosaur-bearing rock formations

References[]

Bibliography[]

• Agnolin, Federico L., and David Varricchio. 2012. Systematic reinterpretation of Piksi barbarulna Varricchio, 2002 from the Two Medicine Formation (Upper Cretaceous) of Western USA (Montana) as a pterosaur rather than a bird. Geodiversitas 34. 883–894. Accessed 2013-01-15. doi:10.5252/g2012n4a10
• Höfling, R. 1985. Faziesverteilung und Fossilvergesellschaftungen im karbonatischen Flachwasser-Milieu der alpinen Oberkreide (Gosau-Formation). Reihe A: Geologie und Paläontologie 3. 1–241.
• McCann, T. 2008. The Geology of Central Europe- Volume 2 Mesozoic and Cenozoic, 1–752. Geological Society of London. ISBN 978-1862392656
• Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2

Further reading[]

• Stern, et al. 2011. Stratigraphy and geochemical charaterisation of Upper Cretaceous non-marine - marine cycles (Grünbach Formation, Gosau Group, Austria. Austrian Journal of Earth Sciences 104. 90–107. Accessed 2020-04-02.
• Wagreich, Michael; Hans Egger; Holger Gebhardt; Omar Mohammed; Christoph Spötl; Veronika Koukal, and Gerhard Hobiger. 2011. A new expanded record of the Paleocene-Eocene transition in the Gosau Group of Gams (Eastern Alps, Austria). 113. 35–65. Accessed 2020-04-02.
• Wagreich, Michael; Alexander Lukeneder, and Hans Egger. 2008. Cretaceous History of Austria. 76. 12–30. Accessed 2020-04-02. ISSN 1017-8880
• Ortner, Hugo. 2007. Styles of soft-sediment deformation on top of a growing fold system in the Gosau Group at Muttekopf, Northern Calcareous Alps, Austria: Slumping versus tectonic deformation. Sedimentary Geology 196. 99–118. Accessed 2020-04-02.
• Zagorsek, K., and A. Kroh. 2003. Cretaceous Bryozoa from Scharrergraben (Santonian, Gosau Group, Eastern Alps). Geologica Carpathica 54. 395–407. Accessed 2020-04-02.
• Wagreich, Michael. 2003. The Grabenbach Formation (Gosau Group, Santonian – Lower Campanian) in the Lattengebirge (Germany): lithostratigraphy, biostratigraphy and strontium isotope stratigraphy. 16. 141–150. Accessed 2020-04-02.
• Wagreich, Michael, and Kurt Decker. 2001. Sedimentary tectonics and subsidence modelling of the type Upper Cretaceous Gosau Basin (Northern Calcareous Alps, Austria). International Journal of Earth Sciences 90. 714–726. Accessed 2020-04-02.