Upper Alum Shale, primarily lower 40 cm: Menevian, Denmark
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
|||||||
|
Hesslandonida indet.
|
|||||||
|
Paterinata
- Paterinida
- Paterinidae
|
|||||||
|
Micromitra sp.
Meek 1873
|
|||||||
|
Lingulata
|
|||||||
|
Lingulata indet.
Gorjansky and Popov 1985
|
|||||||
|
Lingulata
- Acrotretida
|
|||||||
|
Acrotretida indet.
Kuhn 1949
|
|||||||
|
Trilobita
- Ptychopariida
- Acrocephalitidae
|
|||||||
|
Acrocephalites stenometopus
|
|||||||
|
Agnostida
- Peronopsidae
|
|||||||
|
Peronopsis insignis
|
|||||||
|
Ostracoda
|
|||||||
|
Ostracoda indet.
Latreille 1802
|
|||||||
|
Svealuta primordialis
|
|||||||
|
Conodonta
- Paraconodontida
- Furnishinidae
|
|||||||
|
Gapparodus bisulcatus
|
|||||||
|
Conodonta
- Paraconodontida
|
|||||||
|
Westergaardodina tricuspidata
|
|||||||
| see common names | |||||||
Geography
| Country: | Denmark | State/province: | Bornholm |
| Coordinates: | 55.0° North, 15.0° East (view map) | ||
| Paleocoordinates: | 43.2° South, 28.3° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | small collection |
Time
| Period: | Cambrian | Epoch: | Miaolingian |
| 10 m.y. bin: | Cambrian 4 | ||
| Key time interval: | Menevian | Trilobite zone: | Paradoxides forchhammeri |
| Age range of interval: | 504.50000 - 499.50000 m.y. ago |
Stratigraphy
| Formation: | Alum | Member: | Upper Shale | ||
| Regional section: | Formation | Regional bed: | 0-40 cm | ||
| Regional order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Listed as Latest Menevian. Lejopyge laevigata trilobite subzone; Paradoxides forchhammeri zone | |||||
Lithology and environment
| Primary lithology: | black poorly lithified "shale" |
| Secondary lithology: | concretionary lithified "limestone" |
| Lithology description: Fissile, paper-thin but occasionally thick-bedded black shale with occasional limestone nodules | |
| Environment: | carbonate indet. |
| Geology comments: 40 samples, each 10 cm long and averaging 1.5 kg, collected along 4 m section profile | |
Taphonomy
| Modes of preservation: | body,concretion,replaced with pyrite |
| Degree of concentration: | -multiple events |
| Size of fossils: | macrofossils,mesofossils |
| Articulated whole bodies: | some |
| Fragmentation: | occasional |
| Temporal resolution: | time-averaged |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Lejopyge laevigata trilobite subzone; Paradoxides forchhammeri zone; Fauna primarily from lowermost 10 cm; although several localities, treating as pooled samples due to narrow stratigraphic interval | |
Metadata
| Database number: | 75944 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Hearn |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2007-11-06 11:50:31 | Last modified: | 2018-06-27 12:13:19 |
| Access level: | the public | Released: | 2007-11-06 11:50:31 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 25693. | V. Berg-Madsen. 1985. A review of the Andrarum Limestone and the Upper Alum Shale (Middle Cambrian) of Bornholm, Denmark. Bulletin of the Geological Society of Denmark 34:133-143 [P. Novack-Gottshall/P. Hearn] |