Upper Bhuban Fm - Loc. 1: Early/Lower Miocene, India
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Arcidae
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Arca newtoni
Vredenburg 1928
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1 specimen | ||||||
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Anadara (Lunarca) kachharai n. sp.
Tiwari 2001
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Anadara daviesi
Mukerjee 1939
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Anadara cf. gourae
Dey 1961
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1 specimen | ||||||
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Anadara garoensis
Mukerjee 1939
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Anadara craticulata
(Nyst 1848)
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | India |
| Coordinates: | 23.7° North, 92.7° East (view map) |
| Paleocoordinates: | 16.4° North, 94.0° East |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Early/Lower Miocene | ||
| Age range of interval: | 23.03000 - 15.98000 m.y. ago |
Stratigraphy
| Geological group: | Surma | Formation: | Upper Bhuban | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Upper Bhuban Fm of the Bhuban Subgroup, Surma Group (Early-Middle Miocene), which presumably overlies the Middle Bhuban Fm and overlain by sediments of the Boka Bil Subgroup (Ganju, 1975). THICKNESS: From bed of about 1 m thickness within section o 8 m in thickness. AGE: Aquitanian-Burdigalian, Early Miocene. STRATIGRAPHIC POSITION: From near top of section. | |||||
Lithology and environment
| Primary lithology: | lithified silty sandstone |
| Secondary lithology: | poorly lithified marl |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Silty sandstone. LITHIFICATION: Lithified on the basis of taphonomic details (casts and molds). | |
| Environment: | shoreface |
| Geology comments: ENVIRONMENT: Shallow marine (inner neritic to littoral) environment. | |
Taphonomy
| Modes of preservation: | body,cast |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | poor |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | GSI |
| Collection method comments: COLLECTORS: R. P. Tiwari (unknown date). REPOSITORY: Geological Survey of India (GSI), Pachhunga University College (PUC) | |
| Taxonomic list comments:COVERAGE: Limited list, but probably exhaustive Arcoida. other bivalves, gastropods, scaphopods, echinoiderms, and fish are noted to be present, but not listed. NOMENCLATURE: Authoritative publication with modern nomenclature, subgenus and species resolution assignments | |
Metadata
| Database number: | 72181 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-05-26 15:36:16 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2007-05-26 15:36:16 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 24410. | B. P. Tiwari. 2001. Neogene palaeontology of the Surma Group, Mizoram, India. 1 - The Arcoida (Mollusca: Bivalvia). Journal of the Paleontological Society of India 46:147-160 [A. Hendy/A. Hendy] |