Izvorni znanstveni članak

https://doi.org/10.4154/gc.2026.04

Early Tithonian ammonites, microfacies, biostratigraphy, and biogeography from the Mészkemence section (Zengővárkony, Mecsek Mountains, South Hungary)

László Bujtor ; Institute of Natural Geography and Environmental Sciences, Eszterházy Károly Catholic University, Eger, Hungary *

* Dopisni autor.

Sažetak

A rich but poorly preserved Lower Tithonian faunal assemblage is reported from the aban-doned quarry/lime kiln at Zengővárkony (Mecsek Mountains, Hungary). Some Lower Titho-nian Tethyan ammonite zones (Hybonotum, Semiforme, and Fallauxi) are recognised. The Fallauxi Zone is recorded for the first time from the region. The pelagic fauna is dominated by ammonites and their aptychi. Brachiopods, belemnites, and very rarely bivalves are ac-cessory elements of the fauna. The mollusc fauna comprises 167 specimens that represent 18 genera and 13 species. Sublithacoceras rhodaniforme, Pseudopallasiceras toucasi, Bi-plisphinctes pseudocolubrinus, and Physodoceras cf. widerai are recorded for the first time from the Mecsek Mountains. The ammonite fauna has a typical Mediterranean character. Based on cluster analysis, the Mecsek ammonite fauna is closest to the ammonite assem-blages of the Transdanubian Range (Hungary). Based on quantitative analysis, the fauna is similar to the ammonite assemblages of the Apennines Veneto – Trento (Southern Alps, Italy), and Rogozník (Pieniny Klippen Belt). The microfacies is the Globochaete – Sacco-coma microfacies. Large-sized pygopid brachiopods, serpulid tube worms on inoceramid shells, and benthic foraminifera indicate optimal bottom conditions. Pelagic faunal elements (Saccocoma sp., globuligerinid planktonic foraminifera) are also present, and calcareous dinoflagellate cysts (Carpistomiosphaera malmica/tithonica) are also recorded.

Ključne riječi

Late Jurassic; Tisza microcontinent; Mediterranean faunal character; Inoceramus; Globochaete – Saccocoma microfacies

Hrčak ID:

345050

URI

https://hrcak.srce.hr/345050

Datum izdavanja:

24.2.2026.

Posjeta: 0 *