Results 1 to 10 of about 470 (166)

A high latitude Devonian lungfish, from the Famennian of South Africa [PDF]

open access: yesPeerJ, 2019
New fossil lungfish remains comprising two parasphenoids, tooth plates and scales from the Famennian Witpoort Formation of South Africa are described. From the parasphenoid material, which bears similarity to Oervigia and Sagenodus but is nevertheless ...
Robert W. Gess, Alice M. Clement
doaj   +5 more sources

Devonian geoheritage of Siberia: A case of the northwestern Kemerovo region of Russia [PDF]

open access: yesHeliyon, 2023
Southern Siberia demonstrates significant richness of the geological environment, but its uniqueness remains known poorly. Four geosites represent sections of Givetian–Famennian (Middle–Late Devonian) deposits formed in the tectonically active zone where
Jaroslav M. Gutak   +2 more
doaj   +2 more sources

A high latitude Gondwanan species of the Late Devonian tristichopterid Hyneria (Osteichthyes: Sarcopterygii) [PDF]

open access: yesPLoS ONE, 2023
We describe the largest bony fish in the Late Devonian (late Famennian) fossil assemblage from Waterloo Farm near Makhanda/Grahamstown, South Africa. It is a giant member of the extinct clade Tristichopteridae (Sarcopterygii: Tetrapodomorpha) and most ...
Robert W. Gess, Per E. Ahlberg
doaj   +3 more sources

A new origin of the ‘modern’ lungfish dentition revealed by taxonomic overlap between Devonian and Carboniferous dipnoans [PDF]

open access: yesPeerJ
Lungfishes (Dipnoi, Sarcopterygii) initially radiated in the Early Devonian, and reached the apogee of their diversity during this period, especially with regard to their dentitions.
Amin El Fassi El Fehri   +4 more
doaj   +3 more sources

Alasemenia, the earliest ovule with three wings and without cupule [PDF]

open access: yeseLife
The ovules or seeds (fertilized ovules) with wings are widespread and especially important for wind dispersal. However, the earliest ovules in the Famennian of the Late Devonian are rarely known about the dispersal syndrome and usually surrounded by a ...
Deming Wang   +6 more
doaj   +2 more sources

Extreme abundance of ammonoids in mass accumulations from the Late Devonian of the Moroccan Anti-Atlas [PDF]

open access: yesActa Palaeontologica Polonica, 2022
The eastern Anti-Atlas is renowned for its highly fossiliferous outcrops of Devonian rocks. Ammonoids occur in rock-forming numbers at many localities in the Tafilalt and Maïder.
MERLE GREIF   +2 more
doaj   +1 more source

Carbon isotope values in conodont elements from the latest Devonian–Early Carboniferous carbonate platform facies (Timan-Pechora Basin) [PDF]

open access: yesEstonian Journal of Earth Sciences, 2018
The δ13Corg values and their variations in conodont elements of the latest Famennian–Tournaisian species Polygnathus parapetus Druce are considered. The conodonts studied come from the latest Famennian–Tournaisian interval of the Kamenka River section ...
Andrey V. Zhuravlev, Irina V. Smoleva
doaj   +1 more source

Bryozoan Diversity Dynamics at the Devonian–Carboniferous Transition: Evidence from Transcaucasia

open access: yesJournal of Marine Science and Engineering, 2022
The Devonian–Carboniferous transition was marked by a series of perturbations in the geological and biological evolution. The palaeontological data from Transcaucasia allowed the bryozoan diversity dynamics on the northern Gondwanan margin (southern ...
Zoya A. Tolokonnikova, Dmitry A. Ruban
doaj   +1 more source

Stratigraphy of the Upper Devonian - Lower Carboniferous of south-west of Lyzha-Kyrtael swell (Pechora Plate eastward) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2023
A new local stratigraphic scheme is proposed for the upper Famennian - Serpukhovian interval of the south-west of Lyzha-Kyrtael Swell. The stratigraphic sequence is composed of the Famennian carbonates of the Kamenka Formation, the Famennian - middle ...
Zhuravlev A.V.
doaj  

FAMENNIAN CONODONTS FROM KAL-E-SARDAR SECTION, EASTERN TABAS, CENTRAL IRAN

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2009
Sixty-three conodont species and subspecies from the Kal-e-Sardar section indicate that the strata span early to late Famennian. Contrary to most of the sections measured in the Shishtu Formation, the icriodid-polygnathid biofacies is restricted to the ...
HOSSEIN GHOLAMALIAN   +2 more
doaj   +1 more source

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