Results 21 to 30 of about 1,937 (211)

Paleomagnetic studies of the Middle-Upper Devonian section of the Voronezh anteclise (Pavlov quarry) [PDF]

Нефтегазовая геология: Теория и практика, 2021
New paleomagnetic determinations are presented for a collection of rocks of the Middle-Upper Devonian (Givetian and Frasnian stages), sampled from an outcrop on the southwestern slope of the Pavlov granite quarry.
Iosifidi A.G., Popov V.V.
doaj  

The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

European Journal of Taxonomy, 2022
The ammonoids of the suborder Gephuroceratina from the Roteisenstein (Red Ironstone) Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde, Berlin. The
Dieter Korn, Jürgen Bockwinkel
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Stratigraphic distribution and systematic composition of the Middle-Upper Devonian placoderms (anti-archs) from Central Kazakhstan

Известия высших учебных заведений: Геология и разведка, 2016
The stratigraphie distribution and systematic composition of the Middle-Upper Devonian remains of antiarchs from the sediments of Central Kazakhstan are analyzed. Central Kazakhstan ichthyofauna contains mainly endemic taxons of antiarchs.
S. V. Moloshnikov
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Dolocretes in the Amata Formation of Latvia as indicators of climate aridification during the Givetian–Frasnian transition [PDF]

Estonian Journal of Earth Sciences
This study focuses on the description and interpretation of the origin of dolocretes and their siliciclastic host rocks in the upper part of the Amata Formation (Fm) in four exposures in Latvia. The dolocretes occur in at least four intervals.
Ģirts Stinkulis, Ervīns Lukševičs, Daiga Pipira, Marianna Meire-Kārkle, Tõnu Martma   +4 more
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Mercury Anomalies Link to Extensive Volcanism Across the Late Devonian Frasnian–Famennian Boundary in South China

Frontiers in Earth Science, 2021
The Late Devonian Frasnian–Famennian (F–F) mass extinction has been long-time debated by non-volcanic causes, extra-terrestrial impacts, and large igneous province (LIP) eruptions.
Jiawei Zhang, Jiawei Zhang, Changzhou Deng, Weipeng Liu, Zuoqi Tang, Yue Wang, Taiping Ye, Weian Liang, Lingyun Liu   +8 more
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The Late Devonian placoderm Aspidichthys Newberry, 1873 from the Holy Cross Mountains, Poland [PDF]

Fossil Record, 2016
The reported placoderm remains from the Holy Cross Mountains, Poland, belong to the species Aspidichthys ingens Koenen, 1883. This study focuses on the material described in the past from Wietrznia Quarry but the new specimens were also collected form ...
P. G. Dworczak, P. Szrek
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Frasnian-Famennian stable isotopes ratios of CG-1_core

, 2017
Frasnian-Famennian stable isotopes ratios of Sinsin section ...
Day, James E, Zenghui Guo (8021900), Philippe Claeys (6959036), Anne-Christine Da Silva (6959027), David De Vleeschouwer (6959021), Sinnesael, Matthias, Whalen, Michael T, Chen, Daizhao, Daizhao Chen (8021894), De Vleeschouwer, David, Guo, Zenghui, Da Silva, Anne-Christine, Michael T Whalen (6974795), James E Day (8021897), Claeys, Philippe, Matthias Sinnesael (8015945)   +15 more
core   +1 more source

Revision of the Late Devonian ptyctodonts (Vertebrata, Placodermi) from southern Poland [PDF]

Estonian Journal of Earth Sciences
New studies on Frasnian ptyctodonts, including the revision of historic material in addition to the description of new material, have resulted in the detailed description of two species of Ptyctodus (Ptyctodus obliquus, Ptyctodus kielcensis), eight ...
Katarzyna Grygorczyk, Olga Wilk, Piotr Szrek   +2 more
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Frasnian-Famennian high resolution organic carbon isotope data from South China, Fuhe section

, 2017
Frasnian-Famennian low resolution organic carbon isotope data from South China, Fuhe ...
Day, James E, Zenghui Guo (8021900), Philippe Claeys (6959036), Anne-Christine Da Silva (6959027), David De Vleeschouwer (6959021), Sinnesael, Matthias, Whalen, Michael T, Chen, Daizhao, Daizhao Chen (8021894), De Vleeschouwer, David, Guo, Zenghui, Da Silva, Anne-Christine, Michael T Whalen (6974795), James E Day (8021897), Claeys, Philippe, Matthias Sinnesael (8015945)   +15 more
core   +1 more source

Stages of development of the Middle-Late Devonian ICHTHYOFAUNA (Placodermi: Antiarchi) from the northern Eurasia

Известия высших учебных заведений: Геология и разведка, 2019
Three stages, namely Middle Devonian (I), Early Late Devonian (II) and Late Late Devonian (III), are distin-guished in the evolution of antiarchs (Placodermi, Antiarchi) in the Middle-Late Devonian of Northern Eurasia.
S. V. Moloshnikov
doaj   +1 more source