Chanakhchi, Arpinskaya Horizon: Wordian, Armenia
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Rhynchonellata
- Athyridida
- Athyrididae
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Grunt 1986 |
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Demospongiae
- Agelasida
- Sebargasiidae
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| see common names |
| Country: | Armenia |
| Coordinates: |
39.8° North, 45.1° East (view map) |
| Paleocoordinates: | 4.7° South, 52.5° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
| 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 |
| Formation: | Arpa |
| Stratigraphic resolution: | group of beds |
| Stratigraphy comments: Basal unit of the Midian stage of the Tethyan timescale. Kotlyar et al. (1989) identified two fusulinid zones, the lower Yangchienia thompsoni and the upper Chusenella abichi. In central Iran, Chusenella abichi occurs with Neoschwagerina margaritae (Leven, 1998), suggesting a Wordian age for the entire Arpa Formation. |
| Primary lithology: | lithified "limestone" |
| Environment: | carbonate indet. |
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Database number: | 88702 |
| Authorizer: | M. Clapham |
Enterer: | M. Clapham |
| Modifier: | B. Allen |
Research group: | marine invertebrate |
| Created: | 2009-04-18 15:32:32 |
Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public |
Released: | 2009-04-18 15:32:32 |
| Creative Commons license: | CC0 |
| 9785. | | E. V. Boiko, G. V. Belyaeva, and I. T. Zhuravleva. 1991. Sphinktozoa Phanerozoya Territorii SSSR [Phanerozoic Sphinctozoa of the Territory of the USSR] 1-224 [W. Kiessling/B. Brenneis/M. Clapham] |
| 27412 | | T. A. Grunt. 1986. Sistema Brakhiopod Otryada Atiridida. Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 215:1-199 [M. Clapham/M. Clapham/M. Clapham] |