Gaj beds - Bula Khan: Early/Lower Miocene, Pakistan
collected by Vredenburg

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Cerithiidae
Telescopium charpentieri (Basterot 1825)
synonym of Cerithium pseudoobeliscus
Gastropoda - Potamididae
Potamides (Cerithidea) preangerensis Martin 1899
recombined as Cerithidea (Cerithideopsilla) preangerensis
Bivalvia - Arcida - Arcidae
Arca larkhanaensis d'Archaic 1850
Vredenburg 1928
Bivalvia - Pectinida - Pectinidae
Pecten (Aequipecten) scabrellus (Lamarck 1819)
Vredenburg 1928
recombined as Chlamys scabrellus
Bivalvia - Ostreida - Gryphaeidae
Ostrea imbricata Lamarck 1819
Vredenburg 1928
recombined as Hyotissa imbricata
Ostrea lingua Sowerby 1840
Vredenburg 1928
recombined as Gyrostrea lingua
Bivalvia - Ostreida - Ostreidae
Ostrea larimarginata
Vredenburg 1928
Bivalvia - Cardiida - Veneridae
Venus (Clementia) papyracea (Gray 1825)
Vredenburg 1928
recombined as Clementia (Clementia) papyracea
Venus (Omphaloclathrum) puerpera (Linnaeus 1758)
Vredenburg 1928
recombined as Periglypta puerpera
SUBSPECIES: Venus (Omphaloclathrum) puerpera granosa
Bivalvia - Cardiida - Cardiidae
Cardium (Trachycardium) greenhoughi (d'Archiac and Haime 1853)
Vredenburg 1928
Cardium (Discors) triforme (Sowerby 1840)
Vredenburg 1928
recombined as Discors triforme
see common names

Geography
Country:Pakistan
Coordinates: 25.3° North, 67.9° East (view map)
Paleocoordinates:19.5° North, 67.3° 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 - 15.97000 m.y. ago
Stratigraphy
Formation:Gaj
Stratigraphic resolution:group of beds
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the lowermost part of the upper Gaj beds, which regionally overlie the Nari beds (Oligocene) and are overlain by the Middle-Late Miocene Mekran beds. AGE: upper Early Miocene, based on similarity with European faunas of Burdigalian age. STRATIGRAPHIC POSITION: lower part of the upper Gaj beds.
Lithology and environment
Primary lithology: poorly lithified "siliciclastic"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Unknown, but presumably siliciclastic. LITHIFICATION: Poorly-lithified, based on figured specimens.
Environment:coastal indet.
Geology comments: ENVIRONMENT: Not stated in text, but presumably shallow shelf siliciclastic.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collectors:Vredenburg
Collection method comments: COLLECTORS: Multiple collectors including W. Blanford, Wynne, Hira Lal, Ram Singh, and Noetling (staff of Geological Survey of India) during the early 1900's. REPOSITORY: Geological Survey of India, with voucher specimens possibly at the BMNH.
Taxonomic list comments:COVERAGE: Exhaustive for gastropoda, bivalvia, and scaphopoda. NOMENCLATURE: Antiquated, but from an authoritative publication, with use of species and subgenus resolution assignments. Nomenclature can be updated through reference to Harzhauser and Swarko publications.
Metadata
Database number:77400
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2008-01-10 17:03:02 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2009-01-10 17:03:02
Creative Commons license:CC BY
Reference information

Primary reference:

26063. 1925E. Vredenburg. 1925. Description of Mollusca from the post-Eocene Tertiary formation of north-western India: Cephalopoda, Opisthobranchiata, Siphonostomata. Memoirs of the Geological Survey of India 50(1):1-350 [A. Hendy/A. Hendy]

Secondary references:

26112 E. Vredenburg. 1928. Description of Mollusca from the post-Eocene Tertiary formation of north-western India: Gastropoda (in part) and Lamellibranchiata. Memoirs of the Geological Survey of India 50(2):351-506 [A. Hendy/A. Hendy/A. Hendy]