Mekran beds (Gwadar Stage) - South of Talar Gorge (Miocene of Pakistan)

Where: Pakistan (25.3° N, 63.3° E: paleocoordinates 23.4° N, 61.9° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Mekran Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: Overlies the Gaj beds. AGE: Somewhat unclear. Younger than Early Miocene Gaj beds (Aquitanian-Burdigalian), and younger than the Gwadar beds (Pliocene), so probably ranging from Middle to Late Miocene in age. Age will be amended following consideration of taxonomic similarities with Indonesian faunas. STRATIGRAPHIC POSITION: Unknown position within Mekran beds.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified siliciclastic sediments

• ENVIRONMENT: Not stated in text, but presumably shallow shelf siliciclastic.
• SPECIFIC LITHOLOGY: Unknown, but presumably siliciclastic. LITHIFICATION: Poorly-lithified, based on figured specimens.

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 77134: authorized by Austin Hendy, entered by Austin Hendy on 21.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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.
Gastropoda
 Neogastropoda - Melongenidae
 Neogastropoda - Buccinidae
"Eburna spirata" = Babylonia spirata
"Eburna spirata" = Babylonia spirata Linnaeus 1758 true whelk
 Neogastropoda - Conidae
Conus (Dendroconus) loroisii Kiener 1845 cone shell
Bivalvia
 Ostreida - Ostreidae
"Ostrea digitalina" = Cubitostrea digitalina
"Ostrea digitalina" = Cubitostrea digitalina Eichwald 1830 oyster
SUBSPECIES: O. digitalina rholfsii
 Arcida - Arcidae
"Arca tambacana" = Anadara (Anadara) tambacana, "Arca inflata" = Scapharca broughtoni
"Arca tambacana" = Anadara (Anadara) tambacana Martin 1883 ark
"Arca inflata" = Scapharca broughtoni Schrenck 1867 clam