Results 31 to 40 of about 8,625 (202)

CONODONT DISTRIBUTION ACROSS THE MID-CARBONIFEROUS BOUNDARY IN THECENTRAL TAURIDES, TURKEY

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2012
The Mid-Carboniferous boundary in the Aladað Unit of the Central Taurides, previously delineated on the basis of foraminifers, is now further recognizable on the basis of conodonts.
AYSE ATAKUL-ÖZDEMIR   +2 more
doaj   +1 more source

FIRST RECORD OF ORDOVICIAN CONODONTS FROM SOUTHWESTERN SARDINIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
A first illustration of Ordovician conodonts from Sardinia is briefly given. The assemblage, belonging to the HDS biofacies, indicates an early-middle Ashgillian age.
ANNALISA FERRETTI, ENRICO SERPAGLI
doaj   +1 more source

Wear, tear and systematic repair: testing models of growth dynamics in conodonts with high-resolution imaging

open access: yesProceedings of the Royal Society B: Biological Sciences, 2018
Conodont elements are the earliest mineralized vertebrate dental tools and the only ones capable of extensive repair. Two models of conodont growth, as well as the presence of a larval stage, have been hypothesized.
Bryan Shirley   +3 more
semanticscholar   +1 more source

Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia) [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2014
Systematic study of microfossil associations on the Krivi Potok section (Gučevo Mt. area, NW Serbia) has been carried out to document and to refine the Lower Triassic stratigraphic correlations within Alpine-Mediterranean domain.
Sudar Milan N.   +5 more
doaj   +1 more source

Carboniferous conodont biostratigraphy

open access: yesGeological Society, London, Special Publications, 2021
Abstract Carboniferous conodont biostratigraphy comprises regional zonations that reflect the palaeogeographical distribution of taxa and distinct shallow-water and deep-water conodont biofacies. Some species have a global distribution and can effect high quality correlations.
James E. Barrick   +9 more
openaire   +2 more sources

Revision of the conodont zonation of the Wenlock–Ludlow boundary in the Prague Synform [PDF]

open access: yesEstonian Journal of Earth Sciences, 2014
The regional zonation of the Wenlock–Ludlow boundary is established for the Prague Synform using refined data from updated conodont records. The following conodont zones have been recognized in the Prague Synform: the Ozarkodina sagitta sagitta Zone, the
Ladislav Slavík
doaj   +1 more source

Testing hypotheses of element loss and instability in the apparatus composition of complex conodonts: articulated skeletons of Hindeodus

open access: yes, 2017
Knowledge of the conodont skeleton, in terms of the morphology of the elements and the positions they occupy, provides the foundation for understanding of homology, taxonomy and evolutionary relationships in conodonts.
Muhui Zhang   +3 more
semanticscholar   +1 more source

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

open access: yesThe Anatomical Record, Volume 309, Issue 3, Page 550-602, March 2026.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman   +11 more
wiley   +1 more source

New Zealand Geological Timescale 2025

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes   +13 more
wiley   +1 more source

Sections in the western slope of the south urals perspective for the choice of the famennian regional boundary stratotype point

open access: yesЛитосфера, 2015
The Bol’shaya Barma, Akkyr, Ryauzyak and Kuk-Karauk sections in the western slope of the South Urals are considered to be perspective sections for the identification of Famennian Regional Boundary Stratotype Point (RBSP).
R. Ch. Tagarieva, A. G. Mizens
doaj   +2 more sources

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