Early late Visean ammonoid faunas from the Jadar Block (NW Serbia)

Abstract

Abstract:The outcrop at Milivojevića Kamenjar in Družetić (Jadar Block, Vardar Zone, NW Serbia), which exposes a fossiliferous limestone olistolith, is one of the key sites for Carboniferous stratigraphy and paleogeography in the Balkan Peninsula. Its age has been debated several times, and re-examination of the succession was required. Based on ammonoids and conodonts, an interval spanning from the latest Devonian to the basal Serpukhovian is represented. From the early late Visean portion of the section, the new ammonoid genus and species Ubites filipovici gen. nov. et sp. nov. is described. Entogonites tetragonus (Kullmann, 1962), a formerly misinterpreted ammonoid species, is revised.

Conodont biostratigraphy and microfacies of the Late Devonian to Mississippian Milivojevića Kamenjar section (Družetić, NW Serbia)

“…D. Korn described the lithological characteristics of the section, discussed ammonoids, their stratigraphy and global correlation. Our results are based on the data from earlier published papers (Korn et al 2010a(Korn et al , b, 2012Korn & Sudar 2016, etc.). …”

“…Korn et al 2010a), we outlined the approximately 15 metres thick rock succession in the overturned olistolith, but new trenching shows that the total thickness is nearly 17 metres. The succession can be subdivided into five rock units in descending order (i.e.…”

“…In the wider area of Družetić, the older olistostromal part of the Ivovik Formation belonging to the Ub Unit within the Jadar Autochthon is composed of a siltstone matrix with clasts and olistoliths of Devonian and Mississippian limestone of the Družetić Formation (Filipović et al 2003, Korn et al 2010a. The Milivojevića Kamenjar section crops out in an overturned olistolith, in which the stratigraphic succession is inverted.…”

“…After the publication of first data (Stevanović & Kullmann 1962) with the distinction of two ammonoid horizons, Korn et al (2010a, b, c) re-described the rock column in greater detail. Korn et al (2010a) and Korn & Sudar (2016) presented the ammonoid stratigraphy for the outcrop; they separated five ammonoid assemblages corresponding to the five rock units (Fig. 3 3) with several clymeniids can be assigned to the early "Wocklumeria Stufe" in the traditional terminology (Korn & Sudar 2016).…”

“…In this process, we already published a series of papers dealing with the revision of the ammonoids, including a discussion of the stratigraphic age and the palaeogeographic position between Laurussia and Gondwana Korn et al 2010aKorn et al , b, c, d, 2012.…”