Where: Iran (36.2° N, 60.4° E: paleocoordinates 27.8° N, 65.9° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Mantelliceras mantelli ammonoid zone, Aitamir Formation, Early/Lower Cenomanian (99.6 - 93.5 Ma)

• 250 m and 300 m above the basal bioclastic sandstone bed, two sharp-based, glauconitic-bioclastic sandstone beds, 2–3 m thick, are intercalated, up to which ammonoids of the lower lower Cenomanian Mantelliceras mantelli Zone occur.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, glauconitic, shelly/skeletal sandstone

Size class: macrofossils

Collection methods: Repository: Museum für Mineralogie und Geologie (MMG) of the Senckenberg

•Naturhistorische Sammlungen Dresden (SNSD), Germany (repository AsK) and the institutional collection of the Payame Noor university, Mashad, Iran (PNu).

Primary reference: A. Mosavinia and M. Wilmsen. 2011. Cenomanian Acanthoceratoidea (Cretaceous Ammonoidea) from the Koppeh Dagh, NE Iran: taxonomy and stratigraphic implications. Acta Geologica Polonica 61:175-192 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 174333: authorized by Matthew Clapham, entered by Matthew Clapham on 10.11.2015

Creative Commons license: CC BY (attribution)