Brachiopod Sst. Marker, Ashkidah Fm., Ash Shati area, N. flank of Murzuk Basin: Tournaisian, Libya
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Crinoidea
- Monobathrida
- Hexacrinitidae
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Platyhexacrinus sp.
Schmidt 1913
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Cephalopoda
- Goniatitida
- Anthracoceratidae
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Anthracoceras sp.
(Frech 1899)
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| original and current combination Nomismoceras (Anthracoceras) | |||||||
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Rhynchonellata
- Rhynchonellida
- Stenoscismatidae
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Stenoscisma crumenum
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Cupularostrum cupulosum
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Rhynchonellata
- Spiriferida
- Spiriferidae
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Unispirifer unicus
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Rhynchonellata
- Athyridida
- Athyrididae
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Composita cf. megala
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Rhynchonellata
- Spiriferinida
- Syringothyrididae
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Syringothyris cf. texta
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Rhynchonellata
- Orthida
- Rhipidomellidae
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Rhipidomella maharuga
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Strophomenata
- Strophomenida
- Anopliidae
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Saharonetes saharensis
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Strophomenata
- Productida
- Productidae
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Semiproductus bulbosus
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Strophomenata
- Orthotetida
- Schuchertellidae
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Schuchertella cf. globosa
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| see common names | |||||||
Geography
| Country: | Libya |
| Coordinates: | 27.5° North, 14.3° East (view map) |
| Paleocoordinates: | 37.0° South, 17.1° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | local area |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| Stage: | Tournaisian | 10 m.y. bin: | Carboniferous 1 |
| Key time interval: | Tournaisian | ||
| Age range of interval: | 358.90000 - 346.70000 m.y. ago |
Stratigraphy
| Formation: | Ashkidah |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | sandstone |
| Secondary lithology: | claystone |
| Includes fossils? | Y |
| Lithology description: Formation as a whole: "...mostly consists of fine-grained sandstone, siltstone and claystone alternating in various proportions. In the central and eastern parts of Wadi ash Shati, the ore-bearing member "B" developed amidst the Fm., dividing it into a lower, a middle, and an upper part...Fossil fauna is very scarce in the bulk of the Fm.." | |
| Environment: | marine indet. |
| Geology comments: Mergl and Massa consider the environment similar to that of the Tarut Formation (shallow, lagoonal, BA 1). | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 36829 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2004-02-17 08:20:33 | Last modified: | 2006-09-13 14:01:03 |
| Access level: | the public | Released: | 2004-02-17 08:20:33 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 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] |
Secondary references:
| 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] |