Boreal ammonites from the Brno Carbonate Platform (Czechia): High-resolution biostratigraphy of the Middle–Upper Jurassic boundary

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00094862%3A_____%2F25%3A10004670" target="_blank" >RIV/00094862:_____/25:10004670 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/25:00141290

Result on the web

<a href="https://doi.org/10.1016/j.geobios.2025.05.006" target="_blank" >https://doi.org/10.1016/j.geobios.2025.05.006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.geobios.2025.05.006" target="_blank" >10.1016/j.geobios.2025.05.006</a>

Result language

angličtina

Original language name

Boreal ammonites from the Brno Carbonate Platform (Czechia): High-resolution biostratigraphy of the Middle–Upper Jurassic boundary

Original language description

This study provides a taxonomic and biostratigraphic evaluation of Boreal ammonites from the erosional relics of the Brno Carbonate Platform (Czech Republic) located on the northern shelf of the Tethys Ocean during the Jurassic. Several sections were studied in the Brno-Hády and Olomucvany areas. Ammonite tax-onomy and biostratigraphy of these typical localities of the Brno Carbonate Platform was presented more than 90 years ago, and it has not been updated since then. In our study, we present a new collection of mainly Boreal cardioceratid ammonites with short stratigraphic range covering an interval between the uppermost Callovian Lamberti Zone to the lower Oxfordian Cordatum Zone. The immigration of Boreal ammonites to the studied area corresponds to the maximum of the &apos;Boreal Spread&apos; event, which was the greatest southward expansion in the evolutionary history of the ammonite family Cardioceratidae and a major bio-event at the Middle-Late Jurassic (Callovian-Oxfordian) transition. The high-resolution stratigraphy of Callovian-Oxfordian transitional succession is provided for the first time for the Brno Carbonate Platform. The occurrences of the latest Callovian-early Oxfordian Boreal ammonites in the Brno Carbonate Platform indicate a direct marine connection with the Boreal Province during the Lamberti-Cordatum zones range. We also provide new data on the palaeobiodiversity and palaeobio-geography of Boreal ammonites and some remarks on the palaeogeography of the northern margin of the Tethys Ocean. The most probable migration route for Boreal ammonites was the Moravian Gate, con-necting the Brno Carbonate Platform and the Polish Basin.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10506 - Paleontology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geobios

ISSN

0016-6995

e-ISSN

1777-5728

Volume of the periodical

92

Issue of the periodical within the volume

říjen 2025

Country of publishing house

FR - FRANCE

Number of pages

19

Pages from-to

25-43

UT code for WoS article

001573298700001

EID of the result in the Scopus database

2-s2.0-105008108307