Lower Alum Shale, Lower 30 cm: Menevian, Denmark
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Hyolithida
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Hyolithida indet.
Mathew 1962
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Paterinata
- Paterinida
- Paterinidae
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Dictyonina sp.
Cooper 1942
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Lingulata
- Lingulida
- Acrothelidae
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Acrothele sp.
Linnarsson 1876
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Lingulata
- Lingulida
- Obolidae
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Lingulella sp.
Salter 1866
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Lingulata
- Acrotretida
- Acrotretidae
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Acrotreta sp.
Kutorga 1848
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Trilobita
- Corynexochida
- Corynexochidae
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Corynexochus sp.
Angelin 1854
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Trilobita
- Redlichiida
- Paradoxididae
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Paradoxides davidis
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Paradoxides paradoxissimus
(Wahlenberg 1821)
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Agnostida
- Peronopsidae
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Peronopsis pusilla
(Tullberg 1880)
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| recombined as Peronopsis (Svenax) pusillus | ||||||||||
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Agnostida
- Diplagnostidae
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Diplagnostus planicauda
(Angelin 1851)
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Agnostida
- Spinagnostidae
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Hypagnostus parvifrons
(Linnarsson 1869)
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| "subsp. indet." | ||||||||||
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Hypagnostus parvifrons
(Linnarsson 1869)
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| "cicatricosus" | ||||||||||
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Agnostida
- Ptychagnostidae
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Ptychagnostus punctuosus
(Angelin 1851)
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| "punctuosus" | ||||||||||
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Ptychagnostus punctuosus
(Angelin 1851)
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| "subsp. indet." | ||||||||||
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Tomagnostus perrugatus
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Conodonta
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Conodonta indet.
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unclassified
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Problematica indet.
Andrews 1970
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Hexactinellida
- Reticulosa
- Protospongiidae
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Protospongia fenestrata
Salter 1864
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| 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 paradoxissimus |
| Age range of interval: | 504.50000 - 499.50000 m.y. ago |
Stratigraphy
| Formation: | Lower Alum Shale | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Listed as Middle Menevian.Ptychagnostus punctuosus (and uppermost Hypagnostus parvifrons) trilobite subzones; Paradoxides paradoxissimus zone. Lower 30 cm | |||||
Lithology and environment
| Primary lithology: | gray poorly lithified "shale" |
| Lithology description: Fissile, dark gray shale, slightly metamorphosed | |
| Environment: | marine indet. |
| Geology comments: Illite clay. From entire formation, a total of 800 g collected at 10 cm intervals, totalling >400 specimens | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -multiple events |
| Size of fossils: | macrofossils,mesofossils |
| Temporal resolution: | time-averaged |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Ptychagnostus punctuosus (and uppermost Hypagnostus parvifrons) trilobite subzones; Paradoxides paradoxissimus zone; although several localities, treating as pooled samples due to narrow stratigraphic interval | |
Metadata
| Database number: | 75946 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Hearn |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2007-11-06 12:48:36 | Last modified: | 2018-06-30 12:38:43 |
| Access level: | the public | Released: | 2007-11-06 12:48:36 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 25695. | V. Berg-Madsen. 1985. The Middle Cambrian of Bornholm, Denmark: A stratigraphical revision of the Lower Alum Shale and associated anthraconites. Geologiska Föreningens I Stockholm Förhandlingar 106:357-376 [P. Novack-Gottshall/P. Hearn] |