Shalamzar, Bk-2 unit, Grey coral biostromal limestone (Coral interval C) (Miocene of Iran)

Where: Iran (32.1° N, 50.8° E: paleocoordinates 29.5° N, 49.1° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Bakhtiari Formation, Miocene (23.0 - 5.3 Ma)

• The precise dating of the Bakhtiari succession (within the Miocene) requires further highresolution taxonomic and biostratigraphic studies of the foraminifera and nannofossil species.

Environment/lithology: reef, buildup or bioherm; reef rocks

• This coral-bearing limestone, has sparse micritic sediment (only local wackestones). A Poritidae–Faviidae-dominated framework with a carbonate matrix forms the bulk of the biostrome but Heliastraeidae and Acroporidae corals are also present. This biostromal layer has the highest abundance and diversity of corals, and the maximum degree of growth fabric development (CSV: 40%) within the marine succession. The limestone package incorporates a few pebble–cobble and rare boulder-sized clasts. Thus, there are two types of substrates (within coral interval C) colonized by corals: a carbonate substrate; and the surface of the hard clasts
• framework with a carbonate matrix forms the bulk of the biostrome

Size classes: macrofossils, mesofossils

Primary reference: A. H. Rahiminejad, M. Yazdi, and A. R. Ashouri. 2010. Miocene scleractinian corals from a mixed siliciclastic–carbonate system: Bakhtiari succession, Zagros Basin (central-western Iran). Alcheringa: An Australasian Journal of Palaeontology 35(4):571-592 [W. Kiessling/M. Krause/M. Krause]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 151429: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 01.10.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Anthozoa
 Scleractinia - Poritidae
Porites cf. collegniana Michelin 1842 stony coral
very abundant specimens
 Scleractinia - Montastraeidae
Montastrea cf. tchihatcheffi Chevalier 1961 stony coral
 Scleractinia - Acroporidae
Acropora sp. Oken 1815 stony coral
 Scleractinia - Merulinidae
Favites cf. neugeboreni Reuss 1871 stony coral
very abundant specimens
Favites cf. neuvillei Chevalier 1961 stony coral
very abundant specimens
 Scleractinia - Faviidae
Tarbellastraea reussiana Milne-Edwards and Haime 1850 stony coral
Agathiphyllia sp. Reuss 1864 stony coral
Favia sp. Oken 1815 stony coral
Rhodophyceae
 Corallinales - Corallinaceae
Lithophyllum sp. Philippi 1837
Miogypsina
  - Miogypsinidae
Miogypsina sp. Sacco 1893