Tuvaella rackovskii plana Community, Khutsin-Bulak sequence 11: Wenlock, Mongolia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Rhynchonellida
- Orthorhynchulidae
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Tuvaerhynchus khalfini
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Lenatoechia nalivkini
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Stegerhynchus angaciensis
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| original and current combination Rhynchonella (Stegerhynchus) | ||||||||||
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Stegerhynchus mongolicus
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| original and current combination Rhynchonella (Stegerhynchus) | ||||||||||
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Stegerhynchus ulukhemensis
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| original and current combination Rhynchonella (Stegerhynchus) | ||||||||||
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Rhynchonellata
- Atrypida
- Anazygidae
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Tuvaella rackovskii
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| T. rackovskii plana | ||||||||||
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Rhynchonellata
- Orthida
- Proschizophoriidae
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Elegesta mikiforovae
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Rhynchonellata
- Orthida
- Dalmanellidae
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Isorthis tannuolis
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena rhomboidalis
(Wahlenberg 1818)
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| recombined as Leptaena (Leptaena) rhomboidalis | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Mongolia | State/province: | The Mongolian Lake District |
| Coordinates: | 44.9° North, 95.4° East (view map) | ||
| Paleocoordinates: | 38.1° North, 16.1° East | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | basin |
Time
| Period: | Silurian | Epoch: | Wenlock |
| 10 m.y. bin: | Silurian 2 | ||
| *Period: | Early/Lower Silurian | *Epoch: | Early/Lower Wenlockian - Late/Upper Llandoverian |
| Key time interval: | Wenlock | ||
| Age range of interval: | 433.40000 - 427.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
Lithology and environment
| Primary lithology: | lithified siltstone |
| Secondary lithology: | lithified sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Occurs in interbedded coarse sandstone, quartzose, poorly sorted sandsotne, fine to medium-grained siltstone, with very subordinate feldspathic, sandy, organogenis calcarenite with Tuvaella coquinas. In other places there are intercalated feldspathic sandstone and greenish-gray, poorly sorted, fine to medium-grained siltstone of the same composition with members up to 0.5 m thick, and gray, dense, quartzitic sandstone, lense-like interbeds (up to 0.3 m thick) of greenish Tuvaella coquinas, and gray, sandy, feldspathic, organogenic limestone. | |
| Environment: | coastal indet. |
| Geology comments: The lateral position of the Tuvaella plana Community bathymetrically is defined by its closeness to shoreline, in the zone of conglomerate and coarse sandstone accumulation, associated with interbedded terrigenous and subordinate carbonate-terrigenous sediment. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:unstudied bryozoans, gastropods, pelecypods, Rugosa, and Tabulata. | |
Metadata
| Database number: | 13189 | ||
| Authorizer: | M. Foote | Enterer: | C. Simpson |
| Modifier: | S. Kolbe | Research group: | marine invertebrate |
| Created: | 2002-01-26 14:49:58 | Last modified: | 2011-08-26 10:43:08 |
| Access level: | the public | Released: | 2002-01-26 14:49:58 |
| 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] |