Unayzah: Ufimian - Changhsingian, Saudi Arabia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Fascipteris sp.
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Qasimia schyfsmae
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Hill et al. 1985 | ||||||
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Pinopsida
- Cordaitanthales
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Cordaites cf. principalis
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Cycadopsida
- Trigonocarpales
- Alethopteridaceae
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Validopteris sp.
Bertrand 1932
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Sphenopsida
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Lobatannularia sp.
Kawasaki 1927
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Gigantopteridales
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Gigantonoclea sp.
Koidzumi 1936
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Polypodiopsida
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Cladophlebis sp.
Brongniart 1849
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Polypodiopsida
- Equisetales
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Annularia stellata
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Pteropsida
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Pecopteris sp.
Brongniart 1822
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| see common names | |||||||
Geography
| Country: | Saudi Arabia | State/province: | Qasim |
| Coordinates: | 26.1° North, 44.0° East (view map) | ||
| Paleocoordinates: | 28.4° South, 39.9° East | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Permian | Epoch: | Cisuralian - Lopingian |
| Stage: | Kungurian - Changhsingian | 10 m.y. bin: | Permian 2 - Permian 4 |
| *Period: | Middle Permian - Late/Upper Permian | ||
| Key time interval: | Ufimian - Changhsingian | ||
| Age range of interval: | 276.5 - 251.902 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Unayzah | ||||
| Stratigraphy comments: The age of the Unayzah plant bed may therefore be Late Permian, but perhaps early Late Permian rather than the vert late Permian established for the Hazro flora on the basis of fusulinid foraminifera (Fontaine et al. 1980). |
Lithology and environment
| Primary lithology: | "cross stratification",coarse conglomeratic sandstone |
| Secondary lithology: | planar lamination,bioturbation,gray mudstone |
| Includes fossils? | Y |
| Lithology description: weathered, friable, grey shale | |
| Environment: | lacustrine indet. |
| Geology comments: The parallel orientation of the plant remains and the laminate nature of the shale deposit make it clear that the environment of sedimentation was of low energy and apparently lacustrine. | |
Taphonomy
| Modes of preservation: | mold/impression,adpression,permineralized,replaced with hematite,replaced with limonite |
| Size of fossils: | macrofossils |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 11156 | ||
| Authorizer: | H. Sims | Enterer: | S. Ostrowski, A. McGowan |
| Modifier: | A. McGowan | Research group: | paleobotany |
| Created: | 2001-07-23 07:31:06 | Last modified: | 2003-10-07 11:25:44 |
| Access level: | the public | Released: | 2001-07-23 07:31:06 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4108. | A. A. El-Khayal, W. G. Chaloner, and C. R. Hill. 1980. Paleozoic plants from Saudi Arabia. Nature 285:33-34 [H. Sims/S. Ostrowski] |
Secondary references:
| 8055 | PGAP 1063 | A. A. El-Khayal and R. H. Wagner. 1985. Upper Permian stratigraphy and megafloras of Saudi Arabia: palaeogeographic and climate implications. Compte Rendu Congres International de Stratigraphie et de Geologie du Carbonifere 3:17-26 [A. Rees/A. Rees] |
| 8842 | C. R. Hill, R. H. Wagner, and A. A. El-Khayal. 1985. Qasima gen. nov., an early Marattia-like fern from the Permian of Saudi Arabia. Scripta Geologica 79:1-50 [H. Sims/A. McGowan/A. McGowan] |