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

J 2025

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

HYKŠ, Petr a Tomáš KUMPAN

Základní údaje

Originální název

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

Autoři

HYKŠ, Petr a Tomáš KUMPAN

Vydání

GEOBIOS, FRANCE, ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 2025, 0016-6995

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.600 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1016/j.geobios.2025.05.006

Klíčová slova anglicky

Cardioceratidae; Kosmoceratidae; Boreal Spread; Callovian; Oxfordian; Moravian Gate

Změněno: 3. 6. 2025 11:10, Mgr. Petr Hykš, Ph.D.

Anotace

V originále

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 Olomučany areas. Ammonite taxonomy 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 ‘Boreal Spread’ 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 palaeobiogeography 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, connecting the Brno Carbonate Platform and the Polish Basin.

Návaznosti

MUNI/A/1576/2024, interní kód MU

Název: Geologické procesy a jejich depoziční záznam

Investor: Masarykova univerzita, Geologické procesy a jejich depoziční záznam

Citovat

HYKŠ, Petr a Tomáš KUMPAN. Boreal ammonites from the Brno Carbonate Platform (Czechia): High-resolution biostratigraphy of the Middle–Upper Jurassic boundary. GEOBIOS. FRANCE: ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 2025. ISSN 0016-6995. Dostupné z: https://doi.org/10.1016/j.geobios.2025.05.006.

@article{2500999,
   author = {Hykš, Petr and Kumpan, Tomáš},
   article_location = {FRANCE},
   doi = {https://doi.org/10.1016/j.geobios.2025.05.006},
   keywords = {Cardioceratidae; Kosmoceratidae; Boreal Spread; Callovian; Oxfordian; Moravian Gate},
   language = {eng},
   issn = {0016-6995},
   journal = {GEOBIOS},
   title = {Boreal ammonites from the Brno Carbonate Platform (Czechia): High-resolution biostratigraphy of the Middle–Upper Jurassic boundary},
   url = {https://doi.org/10.1016/j.geobios.2025.05.006},
   year = {2025}
}

TY  - JOUR
ID  - 2500999
AU  - Hykš, Petr - Kumpan, Tomáš
PY  - 2025
TI  - Boreal ammonites from the Brno Carbonate Platform (Czechia): High-resolution biostratigraphy of the Middle–Upper Jurassic boundary
JF  - GEOBIOS
PB  - ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
SN  - 00166995
KW  - Cardioceratidae
KW  - Kosmoceratidae
KW  - Boreal Spread
KW  - Callovian
KW  - Oxfordian
KW  - Moravian Gate
UR  - https://doi.org/10.1016/j.geobios.2025.05.006
N2  - 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 Olomučany areas. Ammonite taxonomy 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 ‘Boreal Spread’ 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 palaeobiogeography 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, connecting the Brno Carbonate Platform and the Polish Basin.
ER  -

HYKŠ, Petr a Tomáš KUMPAN. Boreal ammonites from the Brno Carbonate Platform (Czechia): High-resolution biostratigraphy of the Middle–Upper Jurassic boundary. \textit{GEOBIOS}. FRANCE: ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 2025. ISSN~0016-6995. Dostupné z: https://doi.org/10.1016/j.geobios.2025.05.006.

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