Nari beds - Kudin, Baluchistan (Oligocene of Pakistan)

Where: Pakistan (28.0° N, 66.0° E: paleocoordinates 18.3° N, 63.6° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Nari Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: Basal beds of regional succession, and is overlain by the Gaj beds (Early Miocene). AGE: Early Oligocene, based on similarity with European faunas of Lattofian and Stampian age. STRATIGRAPHIC POSITION: Unknown position within unit.

• 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 77158: 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
 Trochoidea - Turbinidae
"Turbo (Olearia) protocepoides" = Turbo protocepoides
"Turbo (Olearia) protocepoides" = Turbo protocepoides Vredenburg 1928 snail
 Cerithioidea - Cerithiidae
"Telescopium charpentieri" = Cerithium pseudoobeliscus, "Cerithium (Ptychocerithium) perlamellosum" = Ptychocerithium perlamellosum, "Cerithium (Gourmya) baluchistanense" = Gourmya baluchistanense
"Telescopium charpentieri" = Cerithium pseudoobeliscus Grateloup 1832 cerith snail
"Cerithium (Ptychocerithium) perlamellosum" = Ptychocerithium perlamellosum Vredenburg 1928 cerith snail
"Cerithium (Gourmya) baluchistanense" = Gourmya baluchistanense Vredenburg 1928 cerith snail
 Cerithioidea - Turritellidae
Protoma deshayesi d'Archiac 1850 turret shell
Protoma subrenevieri Vredenburg 1928 turret shell
Turritella narica Vredenburg 1928 turret shell
SUBSPECIES: Turritella narica baluchistanensis
"Turritella magnasperula" = Turritella (Peyrotia) magnasperula Sacco 1895 turret shell
SUBSPECIES: Turritella magnasperula crassocingulata
"Turritella desmarestina" = Turritella (Peyrotia) desmarestina Basterot 1825 turret shell
 Architaenioglossa - Ampullinidae
"Ampullina (Megatylotus) crassatina" = Ampullinopsis crassatina
"Ampullina (Megatylotus) crassatina" = Ampullinopsis crassatina Lamarck 1804 snail
 Sorbeoconcha - Naticidae
"Sigaretus aquensis" = Sinum aquensis
"Sigaretus aquensis" = Sinum aquensis Recluz 1843 moon snail
SUBSPECIES: Sigaretus aquensis praecedens
 Neogastropoda - Volutidae
Lyria anceps Michelotti 1861 volute
 Sorbeoconcha - Eocypraeidae
"Cypraea (Bernayia) subexcisa" = Apiocypraea subexcisa
"Cypraea (Bernayia) subexcisa" = Apiocypraea subexcisa Braun 1840 snail
Bivalvia
 Mytilida - Mytilidae
Lithodomus sublithophagus d'Orbigny 1850 mussel
 Pectinida - Pectinoidae
"Pecten (Chlamys) tauroperstriatus" = Chlamys
"Pecten (Chlamys) tauroperstriatus" = Chlamys scallop
SUBSPECIES: Pecten (Chlamys) tauroperstriatus persimplicula
 Ostreida - Ostreidae
Ostrea fraasi Mayer-Eymar 1888 oyster
 Arcida - Arcidae
"Arca semitorta" = Trisidos semitorta
"Arca semitorta" = Trisidos semitorta Lamarck 1819 clam
 Cardiida - Veneridae
"Venus (Omphaloclathrum) puerpera" = Periglypta puerpera, "Cytherea (Pitar) porrecta" = Pitar porrecta, "Venus (Clementia) protopapyracea" = Clementia (Clementia) protopapyracea
"Venus (Omphaloclathrum) puerpera" = Periglypta puerpera Linnaeus 1758 venus clam
SUBSPECIES: Venus (Omphaloclathrum) puerpera aglaurae
"Cytherea (Pitar) porrecta" = Pitar porrecta Koenen 1894 venus clam
"Venus (Clementia) protopapyracea" = Clementia (Clementia) protopapyracea Vredenburg 1928 venus clam
 Lucinida - Lucinidae
Lucina (Gibbolucina) deperdita Michelotti 1861 clam