Dicoelosia-fenestrate bryozoan ass'n. of Solvik Fmn. in Oslo-Asker Districts: Aeronian, Norway
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Tentaculitida
- Tentaculitidae
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Tentaculites sp.
von Schlotheim 1820
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16 specimens | |||||||||
| given as "Tentaculites" | ||||||||||
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Strophomenata
- Strophomenida
- Furcitellidae
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Katastrophomena penkillensis
(Reed 1917)
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11 specimens | |||||||||
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena haverfordensis
Bancroft 1949
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7 specimens | |||||||||
| recombined as Leptaena (Leptaena) haverfordensis | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Eoplectodonta duplicata
(de Sowerby and Murchison 1839)
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38 specimens | |||||||||
| recombined as Eoplectodonta (Eoplectodonta) duplicata | ||||||||||
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Strophomenata
- Strophomenida
- Aegiromenidae
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Aegiria norvegica
Opik 1933
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14 specimens | |||||||||
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Strophomenata
- Strophomenida
- Leptestiidae
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Leangella scissa
(Davidson 1871)
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40 specimens | |||||||||
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Rhynchonellata
- Atrypida
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Protatrypa malmoeyensis
Boucot et al. 1964
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26 specimens | |||||||||
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Rhynchonellata
- Atrypida
- Lissatrypidae
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? Meifodia sp.
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26 specimens | |||||||||
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides sp.
Schuchert and Cooper 1931
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13 specimens | |||||||||
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Rhynchonellata
- Orthida
- Hesperorthidae
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Dolerorthis plicata
(de Sowerby and Murchison 1839)
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55 specimens | |||||||||
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Rhynchonellata
- Orthida
- Draboviidae
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Salopina sp.
Boucot 1960
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6 specimens | |||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Isorthis sp.
Kozlowski 1929
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62 specimens | |||||||||
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Rhynchonellata
- Orthida
- Dicoelosiidae
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Dicoelosia osloensis
Wright 1968
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72 specimens | |||||||||
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Rhynchonellata
- Orthida
- Rhipidomellidae
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Mendacella sp.
Cooper 1930
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7 specimens | |||||||||
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Rhynchonellata
- Pentamerida
- Stricklandiidae
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Stricklandia lens
(Sowerby 1839)
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27 specimens | |||||||||
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Craniata
- Craniopsida
- Craniopsidae
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Paracraniops sp.
Williams 1963
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309 specimens | |||||||||
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unclassified
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Bryozoa indet.
Ehrenberg 1831
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271 specimens | |||||||||
| "Stick bryozoans" | ||||||||||
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Stenolaemata
- Fenestrata
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Fenestrata indet.
(Elias and Condra 1957)
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136 specimens | |||||||||
| synonym of Fenestelloidea | ||||||||||
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Ostracoda
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Ostracoda indet.
Latreille 1802
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10 specimens | |||||||||
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Trilobita
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Trilobita indet.
Walch 1771
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5 specimens | |||||||||
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Dipnoi
- Phaneropleuridae
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Pentlandia sp.
Watson and Day 1916
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11 specimens | |||||||||
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Scyphozoa
- Conulariida
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Conulariida indet.
Miller and Gurley 1896
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6 specimens | |||||||||
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Anthozoa
- Rugosa
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Rugosa indet.
Milne-Edwards and Haime 1850
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9 specimens | |||||||||
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Anthozoa
- Favositida
- Favositidae
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Favositidae indet.
Dana 1846
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9 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | Norway |
| Coordinates: | 59.9° North, 10.8° East (view map) |
| Paleocoordinates: | 25.7° South, 8.8° West |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Llandovery |
| Stage: | Aeronian | 10 m.y. bin: | Silurian 1 |
| Key time interval: | Aeronian | ||
| Age range of interval: | 440.80000 - 438.50000 m.y. ago |
Lithology and environment
| Primary lithology: | "shale" |
| Secondary lithology: | mudstone |
| Lithology description: "The vertical sequence of fossil associations can be related to a sequence of sedimentary facies all dominated by shales and mudstones belonging to an open shelf environment. The last phase of the Ordovician/Silurian glacio-eustatic transgression took place while the initial beds of the Solvik Formation were deposited, producing a deep shelf environment...These interpretations are mainly based on frequency, thickness and structures in storm-associated silt and fine sandstone interbeds which occur throughout the formation...The fossils...normally occur scattered all through the sediment and at variable angles to the bedding...Valves are most often disarticulated but fragmentation and orientation are seldom seen...I regard these assemblages as essentially untransported or `disturbed neighborhood assemblages' (Scott 1974) with the exception of some samples from the Leangen Member...[Transport is only local]." | |
| Environment: | marine indet. |
Taphonomy
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Abundance data given by Baarli have not been entered. | |
Metadata
| Database number: | 13845 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Subset of collection #: | 14279 | ||
| Collections that are a subset of this one: | |||
| Created: | 2002-04-29 18:57:22 | Last modified: | 2006-09-15 15:14:05 |
| Access level: | the public | Released: | 2002-04-29 18:57:22 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6160. | B. G. Baarli. 1987. Benthic faunal associations in the Lower Silurian Solvik Formation of the Oslo-Asker Districts, Norway. Lethaia 20:75-90 [M. Foote/M. Foote/J. Ju] |