Outcrop 3, sample M42 (Devonian of Russian Federation)

Where: Russian Federation (53.1° N, 57.4° E: paleocoordinates 0.5° N, 18.5° E)

• coordinate estimated from map

When: sulcatus eta/ steinachensis conodont zone, Pragian (410.8 - 407.6 Ma)

• Outcrop 3 represents a transition from the Lochkovian Sherlubai Horizon and the Pragian Kulamat Horizon.

Environment/lithology: lithified limestone

• The lithostratigraphic boundary between Sherlubai and Kulamat is directly above and is marked by the onset of thick layered dolomitized limestones with relicts of bioclasts. At the base of dolomitized limestones is a thin layer of black folded shale (0.05–0.5 m).

•The lower part of the Kulamat Horizon (here it is 15 m thick) contains only few I-elements of the typical Lochkovian/Pragian boundary taxon Latericriodus steinachensis (Al-Rawi) eta morphotype Klapper & Johnson, 1980 and a few elements of Wurmiella and Pandorinellina cf. miae.

Size class: microfossils

Primary reference: T. Mavrinskaya and L. Slavik. 2013. Correlation of Early Devonian (Lochkovian-early Pragian) conodont faunas of the South Urals (Russia). Bulletin of Geosciences 88(2):283-296 [E. Jarochowska/S. Haegele]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190167: authorized by Emilia Jarochowska, entered by Sarah Haegele on 01.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Conodontophorida - Icriodontidae
 Ozarkodinida - Polygnathidae