Results 21 to 30 of about 5,056 (213)

Middle Ordovician Drepanoistodus (Vertebrata, Conodonta) from Baltica, with description of three new species

open access: yesEuropean Journal of Taxonomy, 2021
Drepanoistodus basiovalis (Sergeeva, 1963) is a common conodont species in Middle Ordovician strata of Baltica. For many years it has been widely accepted that the species encompasses a wide range of morphological plasticity.
Jan Audun Rasmussen   +2 more
doaj   +1 more source

A dataset of fine-grained fossils of the conodont genus Hindeodus for classification using convolutional neural networks

open access: yes中国科学数据, 2023
With the rise of artificial intelligence, the booming application of convolutional neural networks to the classification and identification of fossils has attracted more and more attention. According to our survey, it is found that the species classified
DUAN Xiong
doaj   +1 more source

The Lower Triassic platy limestone in the Jajce area (Bosnia and Herzegovina)

open access: yesGeologija, 2014
The study presents palaeontological and sedimentological data of the Lower Triassic strata of the Jajce area in Bosnia and Herzegovina. Four microfacies types were differentiated: coarse grained bioclastic packstones, fine grained bioclastic packstones,
Tea Kolar-Jurkovšek   +6 more
doaj   +1 more source

Upper Devonian (Famennian) conodonts from radiolarian cherts, Loei Terrane, Loei Province, Northeast Thailand [PDF]

open access: yesResearch & Knowledge, 2015
Conodonts from radiolarian cherts in the Loei Terrane of Loei Province, Northeast Thailand, include Palmatolepis triangularis, P. minuta minuta, P. minuta wolskae and polygnathids and indicate a Famennian crepida Zone age.
Clive Burrett   +2 more
doaj   +1 more source

On the Conodonts

open access: yesAnnals and Magazine of Natural History, 1887
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Rohon, M.-M. J. V., von Zittel, K. A.
openaire   +3 more sources

Subalkalic and calc-alcalic Early-Eifelian volcanicity and related pyrite-pollymetallic mineralization in the Magnitogorsk Megazone, the Southern Urals

open access: yesЛитосфера, 2017
Until now, there is a problem of the stratigraphic position and the serial petrogenetic affiliation of the Dzhusinsky volcanic complex and the correlation of the section of the Dzhusa-Dombarovka pyrite-palevolcanic belt of the East Magnitogorsk zone (EMZ)
M. Kosarev Alexandr   +2 more
doaj   +1 more source

The Evae transgression: a major event? [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The most extensive sea-level event of the Early Ordovician is known as the Evae transgression. During the highstand of this event, the conodont index species Oepikodus evae reached its acme and often coincided with the peak in conodont generic diversity.
Gisella M. Della Costa   +1 more
doaj   +1 more source

UPPER CARBONIFEROUS (PENNSYLVANIAN) CONODONTS FROM SOUTH GUIZHOU OF CHINA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2003
This paper describes in detail che conodont sequence of che Upper Carboniferous (Pennsylvanian) and the upper and lower boundaries in this interval at the Nashui section in Luodian, South Guizhou. The following 23 conodont zones, in descending order, can
WANG ZHIHAO, QI YUPING
doaj   +1 more source

New data about the age of the Dershor Formation (Lower Devonian) on the Chernyshev swell (Timan-Pechora petroleum province) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2023
Lithological and biostratigraphical studies of the stratotyp section of the Lower Devonian Dershor Formation, represented in outcrops in the north of the Chernyshev swell, have been carried out. In the section of the Dershor Formation, a sequence of five
Sokolova L.V., Nechaev M.S., Kotik I.S.
doaj  

First insights into the Devonian–Carboniferous boundary conodonts from the depression deposits of the Kama-Kinel Trough System, East European Platform (Volga-Ural petroleum province, Sarailinskaya Depression)

open access: yesУчёные записки Казанского университета: Серия Естественные науки
Conodonts from the Devonian–Carboniferous boundary deposits in two wells within the Sarailinskaya Depression of the Kama-Kinel Trough System were studied.
G. M. Sungatullina   +7 more
doaj   +1 more source

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