Crinoids, lower Gnishik Formation, Ardjich River, Transcaucasia: Wordian, Armenia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Crinoidea
- Poteriocrinina
- Poteriocrinitidae
|
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| 17 elements | ||||||||||
| Stem fragments | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Armenia |
| Coordinates: | 39.0° North, 45.0° East (view map) |
| Paleocoordinates: | 5.5° South, 52.2° East (Wright 2013) |
| Basis of coordinate: | based on political unit |
| Geographic resolution: | outcrop |
Time
| Period: | Permian | Epoch: | Guadalupian |
| Stage: | Wordian | 10 m.y. bin: | Permian 4 |
| Key time interval: | Wordian | ||
| Age range of interval: | 266.9 - 264.28 m.y. ago |
Stratigraphy
| Formation: | Gnishik | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Lower Gnishik Formation = middle Murgabian, which is equivalent to the middle Wordian. | |||||
Lithology and environment
| Primary lithology: | lithified "carbonate" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 42899 | ||
| Authorizer: | D. Bottjer | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2004-08-06 15:33:23 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2004-08-06 15:33:23 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 11385. | G. A. Stukalina. 1999. The Late Permian crinoids from Primorye, Transcaucasia, and North Caucasus. Paleontological Journal 33(2):139-146 [D. Bottjer/M. Clapham/M. Clapham] |