Sanaegol locality - SN741: Llanvirn, South Korea
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Michelinoceras cancellatum n. sp.
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2 specimens | |||||||||
| KPE 20254 (holotype), KPE 20255 (paratype) | ||||||||||
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Cephalopoda
- Actinocerida
- Ormoceratidae
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Ormoceras weoni n. sp.
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14 specimens | |||||||||
| KPE 20260 (holotype), 20261 to 20267 (all are paratypes), 20268 to 20272, 20274 | ||||||||||
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Ormoceras cricki
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15 specimens | |||||||||
| KPE 20231 to 20245 | ||||||||||
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Cephalopoda
- Endocerida
- Endoceratidae
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Vaginoceras sp.
Hyatt 1884
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1 specimen | |||||||||
| KPE 20230 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | South Korea | State/province: | Kangweondo (Gangwon-do) | County: | Taebaeg City |
| Coordinates: | 37.1° North, 128.9° East (view map) | ||||
| Paleocoordinates: | 5.7° South, 132.5° East | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Middle Ordovician |
| 10 m.y. bin: | Ordovician 2-3 | ||
| Key time interval: | Llanvirn | ||
| Age range of interval: | 468.40000 - 458.40000 m.y. ago |
Stratigraphy
| Geological group: | Taebaek | Formation: | Maggol | ||
| Local section: | Sanaegol (SN) | Local bed: | 741 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Bed 741 is in the uppermost part of the Maggol Fm., about 2 m below base of Jigunsan Fm. (Yun, 1999 fig. 2). The Maggol Formation is a subunit of the Taebaek Group and its uppermost part is Llanvirnian in age (see Kwon, 2005, Geosci. J. 9(4)). | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal "limestone" | ||
| Includes fossils? | Y | ||
| Lithology description: "Lithologic components of the formation consist of bioturbated limestone, well bedded limestone and bioclastic limestone with frequent intercalations of dolomite and dolomitic limestone. Flat pebble conglomerates are included in the lower part of the formation, but they were not observed in the section examined." (Yun, 1999). The lithology of bed 741 is "bioclastic limestone" according to stratigraphic log in fig. 2 in Yun (1999). | |||
| Environment: | shallow subtidal indet. | Tectonic setting: | cratonic basin |
| Geology comments: "Based on sedimentary structures such as desiccation cracks, ripple marks, bird's-eye structures, and bioturbation, Paik (1985, 1987, 1988) suggested tidal flats as the depositional environments of the Maggol Formation." (Yun, 1999). According to Woo (1999, Geosci. J. 3(3)) bioclastic limestones represent the subtidal facies within the peritidal shallowing-upward cycles of the Maggol Fm. | |||
Taphonomy
| Modes of preservation: | body,cast,recrystallized,replaced with calcite |
| Size of fossils: | macrofossils |
| Temporal resolution: | time-averaged |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: KPE = Department of Earth Science, Teachers College, Kyungpook National University, Taegu, South Korea | |
Metadata
| Also known as: | near Taebaeg (Taebaek), Taebaeksan Basin | ||
| Database number: | 89518 | ||
| Authorizer: | B. Kröger | Enterer: | T. Liebrecht |
| Modifier: | T. Liebrecht | Research group: | marine invertebrate |
| Created: | 2009-05-27 16:30:38 | Last modified: | 2009-05-28 08:39:30 |
| Access level: | the public | Released: | 2009-05-27 16:30:38 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 30014. | C.-S. Yun. 1999. Ordovician cephalopods from the Maggol Formation of Korea. Paleontological Research 3(3):202-221 [B. Kröger/T. Liebrecht/T. Liebrecht] |