Where: Oman (23.1° N, 58.4° E: paleocoordinates 8.9° S, 44.3° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Alaunian (215.6 - 212.0 Ma)
• Wadi Alwa IV. About 4 m of red limestone, collection 121A. Middle Norian (Alaunian). The fauna at Wadi Alwa IV is correlated with the middle Norian Macer Zone (Tatzreiter 1981) but it is just possible that it is a trifle younger, of earliest upper Norian age.
• group of beds-level stratigraphic resolution
Environment/lithology: basinal (); lithified, red, 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 73260: authorized by Martin Aberhan, entered by Sabine Nürnberg on 07.06.2007