Jabal Safra, Block 1, collection 104A: Spathian, Oman
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Synechodontiformes
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Safrodus tozeri
Koot and Cuny 2014
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Koot et al. 2015 | ||||||
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Safrodus cf. tozeri
Koot and Cuny 2014
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Koot et al. 2015 | ||||||
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Polyfaciodus pandus
Koot and Cuny 2014
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Koot et al. 2015 | ||||||
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Chondrichthyes
- Hybodontiformes
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cf. Omanoselache sp.
Koot et al. 2013
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Koot et al. 2015 | ||||||
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Omanoselache halli
Koot and Cuny 2014
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Koot et al. 2015 | ||||||
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Cephalopoda
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Ammonoidea indet.
(Zittel 1884)
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| see common names | |||||||
Geography
| Country: | Oman |
| Coordinates: | 22.7° North, 57.8° East (view map) |
| Paleocoordinates: | 28.6° South, 53.9° East |
| Basis of coordinate: | stated in text |
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Early/Lower Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Spathian | ||
| Age range of interval: | 248.90000 - 247.20000 m.y. ago |
Stratigraphy
| Local section: | Jabal Safra | Local bed: | 104A | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: All blocks are Early Triassic. Block 1. Width about 2 m, stratigraphic thickness, 1 m. Collection 104A 30 cm above lower surface. | |||||
Lithology and environment
| Primary lithology: | very fine lithified "limestone" |
| Lithology description: '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.' | |
| Environment: | slope |
| Geology comments: '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).' | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: 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. | |
Metadata
| Database number: | 73215 | ||
| Authorizer: | M. Aberhan, M. Clapham | Enterer: | S. Nurnberg, M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate,vertebrate |
| Created: | 2007-06-07 01:10:08 | Last modified: | 2015-09-14 13:17:05 |
| Access level: | the public | Released: | 2007-06-07 01:10:08 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 24596. | 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] |
Secondary references:
| 56322 | M. B. Koot, G. Cuny, M. J. Orchard, S. Richoz, M. B. Hart and R. J. Twitchett. 2015. New hybodontiform and neoselachian sharks from the Lower Triassic of Oman. Journal of Systematic Palaeontology 13:891-917 [M. Clapham/M. Clapham/M. Clapham] |