2180-II-D-18, Bir al Qasr Fmn., Ash Shati area, N. flank of Murzuk Basin: Eifelian, Libya
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
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Pelecypoda indet.
Goldfuss 1820
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| synonym of Bivalvia | |||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Cupularostrum arenosum
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Rhynchonellata
- Spiriferida
- Ambocoeliidae
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Rhynchospirifer cf. halleri
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Rhynchonellata
- Spiriferida
- Spinocyrtiidae
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Spinocyrtiidae indet.
Ivanova 1959
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Rhynchonellata
- Orthida
- Schizophoriidae
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Schizophoria sp.
King 1850
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Strophomenata
- Orthotetida
- Chilidiopsidae
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Iridistrophia sp.
Havlicek 1965
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Tentaculitida
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Tentaculitida indet.
Ljaschenko 1955
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Stenolaemata
- Cryptostomata
- Fenestellidae
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Fenestellidae indet.
King 1850
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Trilobita
- Phacopida
- Acastidae
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? Kayserops (Comura) sp.
Delo 1935
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Havlicek and Rohlich 1987 | ||||||
| see common names | |||||||
Geography
| Country: | Libya |
| Coordinates: | 27.5° North, 13.8° East (view map) |
| Paleocoordinates: | 53.8° South, 43.2° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Devonian | Epoch: | Middle Devonian |
| Stage: | Eifelian | 10 m.y. bin: | Devonian 3 |
| Key time interval: | Eifelian | ||
| Age range of interval: | 393.30000 - 387.70000 m.y. ago |
Stratigraphy
| Formation: | Bi'r al Qasr | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Age range of formation is Eifelian to Givetian (ref. 8780). However, the bulk is Eifelian, and the Givetian age applies only to the uppermost beds. | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Secondary lithology: | claystone |
| Includes fossils? | Y |
| Lithology description: Formation in general: "In the typical development, the Formation begins with med-gr. sst, continues w/ silty clayst. b eing interbedded w/ sst., and is finished with sst." [ref. 8780] This collection: "quartzose sandstone" | |
| Environment: | marine indet. |
| Geology comments: "[formation yields] poorly diversified benthic asssemblages with mainly sessile elements...low diversity and degree of fragmentation indicate moderate current activity, in a shallow subtidal BA2 environment" | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 36175 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2004-01-15 14:42:57 | Last modified: | 2006-09-13 14:01:03 |
| Access level: | the public | Released: | 2004-01-15 14:42:57 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 9606. | M. Mergl and D. Massa. 1992. Devonian and Lower Carboniferous brachiopods and bivalves from western Libya. Biostratigraphie du Paleozoique 12:1-115 [M. Foote/M. Foote/M. Foote] |
Secondary references:
| 8780 | V. Havlicek and P. Rohlich. 1987. Devonian and Carboniferous brachiopods from the northern flank of the Murzug Basin (Libya). Sbornik Geologickych Ved: Paleontologie 28:117-177 [A. Miller/J. Sessa/J. Sessa] |