Laki Group: Early/Lower Eocene, Pakistan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Dischoplax biserialis
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Gastropoda
- Cerithiidae
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Cerithium sp.
Bruguière 1789
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Gastropoda
- Neogastropoda
- Conidae
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Conus sp.
Linnaeus 1758
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Gastropoda
- Cypraeidae
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Gisortia murchisoni
(d'Archaic and Haime 1854)
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Gastropoda
- Naticidae
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Natica sp.
Scopoli 1777
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Gastropoda
- Neritidae
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Velates perversus
(Gmelin 1791)
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Bivalvia
- Arcida
- Arcidae
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"Arca" sp.
Linnaeus 1758
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys cf. jamensis
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Chlamys cf. senatoria
(Gmelin 1791)
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recombined as Mimachlamys senatoria | |||||||
Bivalvia
- Lucinida
- Lucinidae
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Anodontia pharaonis
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Bivalvia
- Cardiida
- Glossidae
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Blagraveia sindensis
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Bivalvia
- Cardiida
- Chamidae
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Chama brimonti
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Bivalvia
- Cardiida
- Cardiidae
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? Cardium sp.
Linnaeus 1758
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Echinoidea
- Spatangoida
- Brissidae
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? Metalia sowerbyi
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Echinoidea
- Echinolampadoida
- Echinolampadidae
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Echinolampas nummulitica
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Echinoidea
- Echinoneoida
- Echinoneidae
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Amblypygus subrotundus
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see common names |
Geography
Country: | Pakistan |
Coordinates: | 27.2° North, 65.7° East (view map) |
Paleocoordinates: | 0.4° North, 55.6° East |
Basis of coordinate: | based on nearby landmark |
Geographic resolution: | local area |
Time
Period: | Paleogene | Epoch: | Eocene |
Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
Key time interval: | Early/Lower Eocene | ||
Age range of interval: | 55.80000 - 48.60000 m.y. ago |
Stratigraphy
Geological group: | Laki | ||||
Stratigraphic resolution: | group | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Laki Group, which unconformably overlies the Ranikot Group (Late Cretaceous-Paleocene), and is conformably overlain by the Tiyon Formation. THICKNESS: Ranges from 400-2000 ft. AGE: Early Eocene (Ypresian). STRATIGRAPHIC POSITION: A composite list for the entire group. |
Lithology and environment
Primary lithology: | hummocky CS,shelly/skeletal,brown,gray,yellow lithified "reef rocks" |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Mostly limestone, but also mark, calcareous shale, sandstone, and lateritic clay. Limestone is mostly hard and massive, in hummocky, rough or smooth faced beds up to 20 ft thick. Light-medium gray, light brown, or white. Nearly all beds are rich in fossils. Most limestone is reefoid, and some if it is coralline and brecciated. LITHIFICATION: Lithified, on the basis on facies description. | |
Environment: | reef, buildup or bioherm |
Geology comments: ENVIRONMENT: Shallow marine environment, which favoured the prolific, reefoidal growth of forams, molluscs, echinoderms, coral and other organisms, according to text. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | general faunal/floral analysis |
Collection method comments: COLLECTOR: Not reported in text. REPOSITORY: Not reported in text. | |
Taxonomic list comments:COVERAGE: Exhaustive for bivalvia, gastropoda, echinoidea, algae, and foraminifera. |
Metadata
Database number: | 77304 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2008-01-08 14:39:00 | Last modified: | 2013-11-25 13:37:23 |
Access level: | authorizer only | Released: | 2009-01-08 14:39:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
26170. | Hunting Survey Corporation, LTD. 1961. Reconnaissance Geology of Part of West Pakistan 1-550 [A. Hendy/A. Hendy/A. Hendy] |