Sundre Beds: Fossils of Holmhallar-type reef limestone (Manten 1971, Table IX): Ludfordian, Sweden
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Algae
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Algae indet.
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Stromatoporoidea
- Stromatoporoidea
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Stromatoporoidea indet.
Nicholson and Murie 1878
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Stromatoporoidea
- Labechiida
- Labechiidae
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Labechia conferta
(Lonsdale 1839)
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Stromatoporoidea
- Stromatoporida
- Stromatoporidae
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Stromatopora discoidea
(Lonsdale 1839)
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Anthozoa
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Anthozoa indet.
Ehrenberg 1834
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Anthozoa
- Favositida
- Alveolitidae
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Planalveolites fougti
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Anthozoa
- Favositida
- Coenitidae
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Coenites repens
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Crinoidea
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Crinoidea indet.
Miller 1821
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Cephalopoda
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Cephalopoda indet.
Cuvier 1797
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Cephalopoda
- Ascocerida
- Ascoceratidae
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? Ascoceras ? cochleatum
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Ascoceras fistula
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Ascoceras gradatum
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Ascoceras sp.
Barrande 1847
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Cephalopoda
- Tarphycerida
- Ophidioceratidae
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Ophidioceras reticulatum
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synonym of Ophioceras | ||||||||||
Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras sp.
Breynius 1832
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unclassified
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Brachiopoda indet.
Cuvier 1805
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Rhynchonellata
- Orthida
- Hesperorthidae
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Dolerorthis rustica
(Sowerby 1839)
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa phoca
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"Atrypa" phoca Salter | ||||||||||
Plectatrypa marginalis
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Strophomenata
- Strophomenida
- Strophomenidae
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Strophomena orbignyi
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"Strophomena" orbignyi Davidson | ||||||||||
unclassified
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Bryozoa indet.
Ehrenberg 1831
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Trilobita
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Trilobita indet.
Walch 1771
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Trilobita
- Proetida
- Proetidae
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Proetus conspersus
Angelin 1855
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Trilobita
- Phacopida
- Calymenidae
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Calymene tuberculata
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Ostracoda
- Palaeocopida
- Beyrichiidae
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Neobeyrichia buchiana
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synonym of Beyrichia | ||||||||||
see common names |
Geography
Country: | Sweden | State/province: | Gotland |
Coordinates: | 57.5° North, 18.4° East (view map) | ||
Paleocoordinates: | 16.5° South, 2.4° West | ||
Basis of coordinate: | based on political unit | ||
Geographic resolution: | local area |
Time
Period: | Silurian | Epoch: | Ludlow |
Stage: | Ludfordian | 10 m.y. bin: | Silurian 2 |
Key time interval: | Ludfordian | ||
Age range of interval: | 425.60000 - 423.00000 m.y. ago |
Stratigraphy
Formation: | Sundre Beds |
Stratigraphic resolution: | group of beds |
Lithology and environment
Primary lithology: | shelly/skeletal grainstone | ||
Secondary lithology: | "reef rocks" | ||
Lithology description: see geology | |||
Environment: | reef, buildup or bioherm | Tectonic setting: | cratonic basin |
Glacial or sequence phase: | transgressive | ||
Geology comments: SEP: Silurian of Gotland has been variably described as a ramp and platform. Based on my read of the literature, I think if falls best into the ramp category. From Samtleben et al. (1996). Geol. Rundsch 85:278-292; "...a series of massive bioherms surrounded and covered by detritic and coarse crinoidal limestones (Sundre Beds). To the northeast, these platform deposits are replaced by micritic and argillaceous limestones with back reef character and often with an impoverished benthic fauna."
I have assumed that these collections are from near Hoburgen and are therefore from the biohermal and crinoidal limestones." |
Taphonomy
Collection methods and comments
Reason for describing collection: | paleoecologic analysis |
Metadata
Also known as: | Reef 3730 | ||
Database number: | 13622 | ||
Authorizer: | M. Foote | Enterer: | M. Foote |
Modifier: | W. Kiessling | Research group: | marine invertebrate |
Created: | 2002-04-16 11:36:46 | Last modified: | 2008-04-07 11:15:33 |
Access level: | the public | Released: | 2002-04-16 11:36:46 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6128. | A. A. Manten. 1971. Silurian Reefs of Gotland. Developments in Sedimentology 13:1-539 [M. Foote/M. Foote/P. Wagner] |