Nowakia-Styliolina Community, Lower Devonian, Sardinia: Helderbergian - Early/Lower Emsian, Italy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Proetida
- Proetidae
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? Eodrevermannia sp.
Pribyl 1946
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Tentaculita
- Nowakiida
- Nowakiidae
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Nowakia sp.
Gurich 1896
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Tentaculita
- Styliolinida
- Styliolinidae
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Styliolina sp.
Karpinsky 1884
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Conodonta
- Prioniodontida
- Icriodontidae
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Icriodus bilatericrescens
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Icriodus celtibericus
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Conodonta
- Ozarkodinida
- Polygnathidae
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Polygnathus dehiscens
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Pandorinellina steinhornensis
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| see common names | |||||||
Geography
| Country: | Italy |
| Coordinates: | 39.5° North, 9.0° East (view map) |
| Paleocoordinates: | 50.7° South, 45.2° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | local area |
Time
| Period: | Devonian | Epoch: | Early/Lower Devonian |
| *Epoch: | Helderberg | ||
| *International age/stage: | Late/Upper Pragian - Early/Lower Emsian | ||
| Key time interval: | Helderbergian - Early/Lower Emsian | ||
| Age range of interval: | 419.20000 - 393.30000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Stratigraphy comments: Community spans Late Pragian to Early Emsian. |
Lithology and environment
| Primary lithology: | "limestone" |
| Secondary lithology: | "shale" |
| Environment: | marine indet. |
| Geology comments: General for this succession of communities: "Unlike the Carnic Alps, the Silurian-Devonian of Sardinia displays a far less variegated facies picture, being almost exclusively developed in shallow to deeper pelagic environments, with the minor exception of the Emsian Mt. Padenteddu mud mound." For this community: "Although found also at the boundary with the Coral-Stromatactis Community [PBDB coll. 26128], this is typical of limestones intercalated with shales or with massive limestones, where this community is dominant; BA 5-6." | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 26157 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | S. Kolbe | Research group: | marine invertebrate |
| Created: | 2002-10-07 06:13:01 | Last modified: | 2011-08-26 13:23:36 |
| Access level: | the public | Released: | 2002-10-07 06:13:01 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7246. | A. Ferretti, M. Gnoli, and G. B. Vai. 1999. Silurian to Lower Devonian communities of Sardinia. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 271-281 [M. Foote/M. Foote/S. Kolbe] |