Tuvaella dichotomians Community: Llandovery, Mongolia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Isothoris angaciensis
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Anthozoa
- Favositida
- Favositidae
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Palaeofavosites porosus
Sokolov 1951
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Mesofavosites akchokkensis
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena xyziltchigaensis
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Rhynchonellata
- Atrypida
- Atrypidae
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Plectatrypa imbricata
(Sowerby and Murchison 1839)
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Rhynchonellata
- Atrypida
- Anazygidae
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Tuvaella dichotomians
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Rhynchonellata
- Atrypida
- Glassiidae
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Glassia minuta
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Rhynchonellata
- Spiriferida
- Delthyrididae
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ex gr. Howellella elegans
Muir-Wood 1925
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Eospirifer radiatus
(Sowerby 1834)
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Stegerhynchus angaciensis
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| original and current combination Rhynchonella (Stegerhynchus) | |||||||
| see common names | |||||||
Geography
| Country: | Mongolia | State/province: | Gobi Altai |
| Coordinates: | 44.9° North, 95.4° East (view map) | ||
| Paleocoordinates: | 33.3° North, 21.6° East | ||
| Basis of coordinate: | based on political unit |
Time
| Period: | Silurian | Epoch: | Llandovery |
| 10 m.y. bin: | Silurian 1 | ||
| *Period: | Early/Lower Silurian | *Epoch: | Early/Lower Llandoverian - Middle Llandoverian |
| Key time interval: | Llandovery | ||
| Age range of interval: | 443.80000 - 433.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
Lithology and environment
| Primary lithology: | gray lithified sandy "limestone" |
| Secondary lithology: | gray lithified "limestone" |
| Lithology description: Gray, sandy, organogenic limestone interbedded with unfossiliferous, gray, dence, flinty limestone | |
| Environment: | marine indet. |
| Geology comments: A moderately quiet water environment with a reasonably firm bottom. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils,some microfossils |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:occurs with abundant, unstudied trilobites and ostracodes | |
Metadata
| Database number: | 13188 | ||
| Authorizer: | M. Foote | Enterer: | C. Simpson |
| Modifier: | S. Kolbe | Research group: | marine invertebrate |
| Created: | 2002-01-26 13:56:55 | Last modified: | 2011-08-26 10:40:34 |
| Access level: | the public | Released: | 2002-01-26 13:56:55 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4340. | K.H. S. Rozman. 1999. Silurian brachiopod communities of Mongolia. in A. J. Boucot and J. D. Lawson, eds., Paleocommunities - a case study from the Silurian and Lower Devonian 164-176 [M. Foote/C. Simpson] |