Where: Pakistan (25.5° N, 69.0° E: paleocoordinates 19.5° N, 68.4° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Gaj Formation, Early/Lower Miocene (23.0 - 16.0 Ma)
• 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.
• group of beds-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified shale
Size class: macrofossils
Collected by Vredenburg
Collection methods: surface (in situ),
• 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.
Primary reference: E. 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 77160: authorized by Austin Hendy, entered by Austin Hendy on 21.12.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
"Cypraea (Bernayia) humerosa" = Barycypraea humerosa
"Cypraea (Bernayia) humerosa" = Barycypraea humerosa Sowerby 1839 cowry | |
Turbinella premekranica Vredenburg 1925 snail | |
Bivalvia | |
"Ostrea angulata" = Crassostrea angulata
"Ostrea angulata" = Crassostrea angulata Sowerby 1840 oyster | |
Arca larkhanaensis, "Arca semitorta" = Trisidos semitorta
Arca larkhanaensis d'Archaic 1850 ark
"Arca semitorta" = Trisidos semitorta Lamarck 1819 clam |