Results 21 to 30 of about 691 (175)

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

Diagenesis does not invent anything new: Precise replication of conodont structures by secondary apatite

open access: yesScientific Reports, 2017
Conodont elements are important archives of sea/pore water chemistry yet they often exhibit evidence of diagenetic mineral overgrowth which may be biasing measurents.
Annalisa Ferretti   +3 more
doaj   +1 more source

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

Lower Jurassic conodonts from the Inuyama area of Japan: implications for conodont extinction

open access: yesFrontiers in Ecology and Evolution, 2023
It is generally accepted that conodonts went extinct at the end of the Triassic, but younger conodont fossils have been reported, and it is becoming clear that conodont extinction occurred asynchronously across different regions. Although some reports of
Yixing Du   +4 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

THE FIRST RECORD OF CAMBRIAN CONODONTS FROM THE HUQF-HAUSHI OUTCROPS, OMAN, ARABIAN PENINSULA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2016
Outcrops of Cambrian sediments of the uppermost Miqrat Formation, the Al Bashair Formation and the basal Barik Formation were sampled for conodont and palynomorph studies.
GABRIELLA BAGNOLI   +2 more
doaj   +1 more source

The function of conodonts [PDF]

open access: yesGeological Magazine, 1974
Postulated structure of conodont-supported horny cusp, reconciliation of internal nature of conodonts with a tooth ...
openaire   +1 more source

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