Laki Group: Early/Lower Eocene, Pakistan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Dischoplax biserialis
Gastropoda - Cerithiidae
Cerithium sp. Bruguière 1789
Gastropoda - Neogastropoda - Conidae
Conus sp. Linnaeus 1758
Gastropoda - Cypraeidae
Gisortia murchisoni (d'Archaic and Haime 1854)
Gastropoda - Naticidae
Natica sp. Scopoli 1777
Gastropoda - Neritidae
Velates perversus (Gmelin 1791)
Bivalvia - Arcida - Arcidae
"Arca" sp. Linnaeus 1758
Bivalvia - Pectinida - Pectinidae
Chlamys cf. jamensis
Chlamys cf. senatoria (Gmelin 1791)
recombined as Mimachlamys senatoria
Bivalvia - Lucinida - Lucinidae
Anodontia pharaonis
Bivalvia - Cardiida - Glossidae
Blagraveia sindensis
Bivalvia - Cardiida - Chamidae
Chama brimonti
Bivalvia - Cardiida - Cardiidae
? Cardium sp. Linnaeus 1758
Echinoidea - Spatangoida - Brissidae
? Metalia sowerbyi
Echinoidea - Echinolampadoida - Echinolampadidae
Echinolampas nummulitica
Echinoidea - Echinoneoida - Echinoneidae
Amblypygus subrotundus
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]