Filon Douze Tafilalt bed BS: Lochkovian, Morocco
collected by Kröger 2007
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Homectenowakia bohemica
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Cephalopoda
- Orthocerida
- Arionoceratidae
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Parakionoceras originale
(Barrande 1868)
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1 specimen | |||||||||
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Arionoceras capillosum
(Barrande 1868)
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25 specimens | |||||||||
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Cephalopoda
- Orthocerida
- Sphaerorthoceratidae
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Akrosphaeorthoceras sp.
Ristedt 1968
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3 specimens | |||||||||
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Sphaerorthoceras sp.
Ristedt 1968
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2 specimens | |||||||||
| Sphaerorthoceras sp. A+ B | ||||||||||
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Parasphaerorthoceras sp.
Ristedt 1968
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4 specimens | |||||||||
| Parasphaerorthoceras sp. B +H | ||||||||||
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthocycloceras fluminense
(Meneghini 1857)
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1 specimen | |||||||||
| original and current combination Orthoceras fluminense | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Morocco |
| Coordinates: | 30.9° North, 4.1° West (view map) |
| Paleocoordinates: | 64.4° South, 30.6° East |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Devonian | Epoch: | Early/Lower Devonian |
| Stage: | Lochkovian | 10 m.y. bin: | Devonian 1 |
| Key time interval: | Lochkovian | Conodont zone: | Pedavis pesavis |
| Age range of interval: | 419.20000 - 410.80000 m.y. ago |
Stratigraphy
| Local section: | Filon Douze | Local bed: | PK | ||
| Stratigraphy comments: Approximately 40 m above Scyphocrinites limestone. The bed represents the pesavis Bioevent. | |||||
Lithology and environment
| Primary lithology: | black lithified argillaceous,silty sandstone | ||
| Lithology description: thickness 0.3 m, black bituminous silt-, to sandstone. Toward the top of the bed the arenitic content decreases markedly and the bed appears a a finely laminated, dark brownish, bituminous sandy shale | |||
| Environment: | offshore shelf | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body,recrystallized,original aragonite,replaced with calcite |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | abundant |
| Articulated whole bodies: | none |
Collection methods and comments
| Collection excludes: | some macrofossils | ||
| Collection methods: | surface (in situ),mechanical,field collection | ||
| Reason for describing collection: | paleoecologic analysis | ||
| Museum repositories: | MfN | ||
| Collectors: | Kröger | Collection dates: | 2007 |
Metadata
| Also known as: | Jovellania limestone succession. - not to confuse with "Jovellania limestone" of Bultynck and Walliser (2000) | ||
| Database number: | 91609 | ||
| Authorizer: | B. Kröger | Enterer: | B. Kröger |
| Modifier: | B. Kröger | Research group: | marine invertebrate |
| Created: | 2009-10-06 12:49:35 | Last modified: | 2009-10-06 15:00:26 |
| Access level: | the public | Released: | 2009-10-06 12:49:35 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 29331. | B. Kröger. 2008. Nautiloids before and during the ammonoid origin in a Siluro–Devonian section of the Tafilalt (Morocco). Special Papers in Palaeontology 79:1-110 [B. Kröger/B. Kröger] |