Baltoeurypterus Community at Northern Nes: Sheinwoodian, Norway
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chlorophyceae
- Dasycladales
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Chaetocladus capillarus
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| algae | ||||||||||
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unclassified
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Mollusca indet.
Linnaeus 1758
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Rhynchonellata
- Rhynchonellida
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Rhynchonellida indet.
Kuhn 1949
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Stenolaemata
- Trepostomida
- Amplexoporidae
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Amplexopora sp.
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Eurypterida
- Eurypteridae
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Baltoeurypterus tetragonophthalmus
(Fischer 1839)
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| original and current combination Eurypterus tetragonophthalmus | ||||||||||
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? Baltoeurypterus latus
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| synonym of Eurypterus | ||||||||||
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Eurypterida
- Adelophthalmidae
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Nanahughmilleria sp.
(Kjellesvig-Waering 1961)
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| original and current combination Hughmilleria (Nanahughmilleria) | ||||||||||
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Eurypterida
- Mixopteridae
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Mixopterus sp.
Ruedemann 1921
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Eurypterida
- Pterygotidae
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Pterygotus sp.
Agassiz 1839
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Ostracoda
- Palaeocopida
- Beyrichiidae
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Beyrichia sp.
M'Coy 1846
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| see common names | ||||||||||
Geography
| Country: | Norway |
| Coordinates: | 60.2° North, 10.3° East (view map) |
| Paleocoordinates: | 21.0° South, 8.1° West |
| Basis of coordinate: | based on political unit |
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Wenlock |
| Stage: | Sheinwoodian | 10 m.y. bin: | Silurian 2 |
| *International age/stage: | Late/Upper Sheinwoodian - Early/Lower Homerian | ||
| Key time interval: | Sheinwoodian | ||
| Age range of interval: | 433.40000 - 430.50000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Steinsfjorden | Member: | Sjorvoll | ||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Probably near the transition between Sheinwoodian and Homerian. | |||||
Lithology and environment
| Primary lithology: | mudstone |
| Secondary lithology: | "limestone" |
| Includes fossils? | Y |
| Lithology description: "This fauna is found in dark mudstones interbedded with shales and limestones." | |
| Environment: | marine indet. |
| Geology comments: "Generally the succession shows rapid fluctuation between intertidal and very shallow subtidal. Mudflake conglomerates, desiccation crakcs and algal laminated dolomitic limestones are common immediately below and also above, and hypersaline conditions are interpreted. The part with this community is, however, interpreted as very shallow subtidal, normal marine to brackish water. A BA 1 assignment is reasonable." | |
Taphonomy
Collection methods and comments
| Collection excludes: | some macrofossils |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: In addition to the material from this locality, I have included two genera (Pterygotus and Nanahughmilleria) "found in the same formation with a marine fauna at a slightly younger position within the same formation 200 m south alonge the E68 road." | |
| Taxonomic list comments:Not all higher taxa listed at genus level. | |
Metadata
| Database number: | 14266 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2002-05-29 12:19:09 | Last modified: | 2006-09-15 15:14:05 |
| Access level: | the public | Released: | 2002-05-29 12:19:09 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6308. | B. G. Baarli, H. B. Keilen, and M. E. Johnson. 1999. Silurian communities of the Oslo Region, Norway. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 327-349 [M. Foote/M. Foote/P. Wagner] |