Shaqra Group (upper Dhruma D7 Atash Mb.2b): Callovian, Saudi Arabia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Coccolithophyceae
- Watznaueriales
- Watznaueriaceae
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Watznaueria manivitae
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| =Cyclagelosphaera deflandrei=nannoflora | ||||||||||
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Ellipsagelosphaera britannica
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| synonym of Watznaueria | ||||||||||
| =nannoflora | ||||||||||
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Ellipsagelosphaera communis
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| synonym of Watznaueria | ||||||||||
| =nannoflora | ||||||||||
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Cyclagelosphaera margereli
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| =nannoflora | ||||||||||
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Pfenderinidae
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Praekurnubia crusei
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Steinekella crusei
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| =Foram. | ||||||||||
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Rhynchonellata
- Terebratulida
- Zeilleriidae
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Rugitela sp.
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Rhynchonellata
- Rhynchonellida
- Tetrarhynchiidae
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Burmirhynchia sp. n. sp.
Buckman 1917
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| =n.sp.B | ||||||||||
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Daghanirhynchia sp.
Muir-Wood 1935
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Echinoidea
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Bothryopneustes inflata
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| =Echin. | ||||||||||
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Echinoidea
- Salenioida
- Acrosaleniidae
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Acrosalenia hemicrenulata
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| see common names | ||||||||||
Geography
| Country: | Saudi Arabia |
| Coordinates: | 24.2° North, 46.6° East (view map) |
| Paleocoordinates: | 2.0° South, 34.0° East |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Callovian | 10 m.y. bin: | Jurassic 5 |
| Key time interval: | Callovian | ||
| Age range of interval: | 165.30000 - 161.50000 m.y. ago |
Stratigraphy
| Geological group: | Shaqra | Formation: | Dhruma | Member: | Atash Mb.2b |
| Local section: | Khashm adh Dhibi | Local bed: | upper Dhruma D7 | ||
| Local order: | top to bottom |
Lithology and environment
| Primary lithology: | lithified "limestone" | ||
| Includes fossils? | Y | ||
| Lithology description: The Dhruma Fm essentially is composed of limestones and clayey rocks in its central outcrop zone but passes to detrial facies northwards and southwards bioclastic limestone | |||
| Environment: | lagoonal/restricted shallow subtidal | Tectonic setting: | cratonic basin |
Taphonomy
| Size of fossils: | macrofossils,microfossils |
Collection methods and comments
| Collection methods: | bulk,mechanical,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 45540 | ||
| Authorizer: | F. Fursich | Enterer: | S. Hicks |
| Modifier: | S. Hicks | Research group: | marine invertebrate |
| Created: | 2004-11-01 07:54:17 | Last modified: | 2005-03-10 06:08:18 |
| Access level: | the public | Released: | 2004-11-01 07:54:17 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11728. | J. Manivit, Y.-M. Le Nindre, and D. Vaslet. 1990. Le Jurassique D`Arabie Centrale. Document du BRGM 4(194):25-519 [F. Fursich/S. Hicks/W. Kiessling] |