波兰外喀尔巴阡山脉前-马古拉单元中始新世沉积物中Ammogloborotalia aff.subvesicularis (Hanzlíková)的最新属位

IF 1 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Geologica Carpathica Pub Date : 2023-10-31 DOI:10.31577/geolcarp.2023.18

Weronika Baliniak

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An updated generic status of Ammogloborotalia aff. subvesicularis (Hanzlíková) from the Middle Eocene deposits of the Fore-Magura Unit (Polish Outer Carpathians)

: The Middle Eocene microfauna of the Fore-Magura Unit contains rich foraminiferal assemblages with numerous trochospiral, agglutinated species originally described as Trochammina subvesicularis Hanzlíková. The paper provides a reconsideration of this taxon due to its inconclusive generic status. A new insight into the systematics of trochamminid species is also discussed. A total of 25 samples from Middle Eocene slope marl deposits of the Fore-Magura Unit (from the western part of the Polish Outer Carpathians) were taken for examination. Based on the analysis of 183 specimens recovered from deep-sea mixed foraminiferal assemblages the species is assigned to the genus Ammogloborotalia (Zheng & Fu). The Eocene specimens, named under different generic names and in open nomenclature, similar to the description of Trochammina subvesicularis Hanzlíková, should be referred to the taxonomic name Ammogloborotalia aff. subvesicularis . Similar to modern species of Ammogloborotalia (Zheng & Fu), their Middle Eocene representatives imply a bathyal water depth and good connection of the flysch-type Fore-Magura zone basin with the World Ocean.

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来源期刊

Geologica Carpathica 地学-地球科学综合

CiteScore

2.40

自引率

23.10%

发文量

审稿时长

>12 weeks

期刊介绍： GEOLOGICA CARPATHICA covers a wide spectrum of geological disciplines including geodynamics, tectonics and structural geology, volcanology, stratigraphy, geochronology and isotopic geology, karstology, geochemistry, mineralogy, petrology, lithology and sedimentology, paleogeography, paleoecology, paleobiology and paleontology, paleomagnetism, magnetostratigraphy and other branches of applied geophysics, economic and environmental geology, experimental and theoretical geoscientific studies. Geologica Carpathica , with its 60 year old tradition, presents high-quality research papers devoted to all aspects not only of the Alpine-Carpathian-Balkanian geoscience but also with adjacent regions originated from the Mediterranean Tethys and its continental foreland. Geologica Carpathica is an Official Journal of the Carpathian-Balkan Geological Association.