Where: Oman (23.1° N, 58.4° E: paleocoordinates 28.3° S, 54.5° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Smithian (251.3 - 247.2 Ma)
• Wadi Alwa III. About 5 metres of red and orange highly fossiliferous limestone is exposed. Bedding is inclined SE at a steep angle. Smithian ammonoids were collected from three levels. Level 1, collection 120A.
• bed-level stratigraphic resolution
Environment/lithology: basinal (); lithified, argillaceous limestone
•The environment indicated by this facies was probably not exactly like that of the Halltstatt limestones, but was perhaps influenced by the presence of fine-grained terrigenous sediment.'
Size class: macrofossils
Collection methods: Localities at Wadi Alwa were found in the winter of 1980-1981 by members of an expedition organized by Imperial College, London. The party included G. Loftus and G. Nichols. In 1984 the writers spent three days studying three localities at Wadi Alwa.
Primary reference: E. T. Tozer and T. J. Calon. 1990. Triassic ammonoids from Jabal Safra and Wadi Alwa, Oman, and their significance. In: Robertson, A. H. F., Searle, M. P. & Ries, A. C. (eds) The Geology and Tectonics of the oman Region Geological Society, London, Special Publication (49)203-211 [M. Aberhan/S. Nurnberg] more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 73257: authorized by Martin Aberhan, entered by Sabine Nürnberg on 07.06.2007