Baranduz P19 (Oligocene of Iran)

Where: Iran (37.3° N, 44.9° E: paleocoordinates 31.2° N, 41.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: P19 foram zone, Qom Formation, Rupelian (33.9 - 28.1 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; limestone

• medium- to thick-bedded limestones with abundant porcellaneous benthic foraminifera such as Dendritina rangi, d’Orbigny 1826 (Plate II, Figures 1 & 2); Penarchaias glynnjonesi (Henson 1950) (Plate II, Figure 5); Spirolina cf. cylindracea (Lamarck 1804) (Plate II, Figure 9); Peneroplis thomasi, Henson 1950 (Plate II, Figure 8); Austrotrillina spp., Borelis sp. (Plate II, Figure 6); Bullaveolina sp. (Plate II, Figure 7) and Praerhapydionina delicata Henson 1950 (Plate II, Figures 3 & 4). Associated assemblages of small benthic foraminifera are dominated by Triloculina tricarinata d’Orbigny 1826 (Plate II, Figure 10); Triloculina trigonula (Lamarck 1804) (Plate II, Figure 12); Textularia spp., Quinqueloculina spp., Spiroloculina sp. (Plate II, Figure 11); polymorphinids and valvulinids. Calcareous plankton is scarce.

Size class: microfossils

Primary reference: M. Yazdi-Moghadam. 2011. Early Oligocene Larger Foraminiferal Biostratigraphy of the Qom Formation, South of Uromieh (NW Iran). Turkish Journal of Earth Sciences 20(6):847-856 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 138869: authorized by Mark Uhen, entered by Mark Uhen on 30.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Victoriella
  -
Rotaliina
 Nummulitacea - Nummulitidae
 Planorbulinacea - Planorbulinidae
 Acervulinacea - Acervulinidae
Sphaerogypsina sp. Galloway 1933
Halkyardia
  -
Neorotalia
  -
Rhodophyceae
 Corallinales -
Foraminferea
 Miliolida - Alveolinidae
 Miliolida - Soritidae
 Miliolida - Peneroplidae
 Miliolida - Austrotrillinidae