Jabal Safra, Block 3, collection 103B: 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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Chondrichthyes
- Hybodontiformes
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cf. Omanoselache sp.
Koot et al. 2013
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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
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Block 3. Stratigraphic thickness is 3.5 m, with stratification parallel to that of surrounding Guwayza beds. Width, 2-5 m. | |||||
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: | mesofossils,microfossils |
Collection methods and comments
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | GSC |
Metadata
| Database number: | 173256 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | vertebrate |
| Created: | 2015-09-14 13:06:52 | Last modified: | 2015-09-14 13:06:52 |
| Access level: | the public | Released: | 2015-09-14 13:06:52 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 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] |