Jabal Safra, Block 1, collection 104A (Triassic of Oman)

Where: Oman (22.7° N, 57.8° E)

• Paleocoordinates: 21.6° S, 53.6° E (Wright 2013)

• coordinate stated in text

• small collection-level geographic resolution

When: Spathian (251.3 - 247.2 Ma)

• All blocks are Early Triassic. Block 1. Width about 2 m, stratigraphic thickness, 1 m. Collection 104A 30 cm above lower surface.

• bed-level stratigraphic resolution

Environment/lithology: slope; lithified limestone

• 'The Hallstatt facies is generally interpreted as a pelagic deposit laid down far from any source of terrigenous sediment. Close juxtaposition of ammonoid zones is the general rule and indicates very low rates of sedimentation. The depth at which Hallstatt rocks formed has long been debated. A summary of views up to about 1970 is given in Tozer (1971). In that account a deep water environment was suggested but the arguments favouring deposition at about 200 m, as on seamounts, seem to be strongest (e.g. Jenkyns 1970).'
• 'The Early and Middle Triassic ammonoids occur in great abundance in very fine-grained limestone, mostly red, but in part grey or green. The colour, nature of the matrix, and abundance of ammonoids is the facies of the Hallstatt limestone.'

Size class: macrofossils

Collection methods: The Jabal Safra locality was discovered by T. J. Calon and C. Lee in 1983. In 1984 the writers spent three days studying Jabal Safra. Only ammonoids. No other macrofossils are present.

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: taxonomic analysis

PaleoDB collection 73215: authorized by Martin Aberhan, entered by Sabine Nürnberg on 07.06.2007, edited by Matthew Clapham

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonoida -
"Ammonoidea indet." = Ammonoida
"Ammonoidea indet." = Ammonoida Haeckel 1866 ammonite
Chondrichthyes
 Hybodontiformes -
cf. Omanoselache sp., Omanoselache halli
cf. Omanoselache sp. Koot et al. 2013 elasmobranch
Omanoselache halli Koot and Cuny 2014 elasmobranch
 Synechodontiformes -
Polyfaciodus pandus, Safrodus tozeri, Safrodus cf. tozeri
Polyfaciodus pandus Koot and Cuny 2014 elasmobranch
Safrodus tozeri Koot and Cuny 2014 elasmobranch
Safrodus cf. tozeri Koot and Cuny 2014 elasmobranch