Results 41 to 50 of about 64,690 (275)

The tarphyceratid cephalopod Trocholites in the Middle–Upper Ordovician of the Prague Basin —the Baltican element in peri-Gondwana [PDF]

open access: yesActa Palaeontologica Polonica, 2023
The vast majority of cephalopods of the order Tarphyceratida are known from regions that were located at mid- or low palaeolatitudes during the Ordovician (mainly Baltica, Laurentia, and Chinese palaeoblocks).
Martina Aubrechtová   +2 more
doaj   +1 more source

The eoorthid brachiopod Apheoorthina in the Lower Ordovician of NW Argentina and the dispersal pathways along western Gondwana [PDF]

open access: yes, 2016
The eoorthid brachiopod Apheoorthina is reported for the first time from the Lower Ordovician of NW Argentina. It is represented by a species similar to A.
Benedetto, Juan Luis Arnaldo   +1 more
core   +2 more sources

Asymmetric continental deformation during South Atlantic rifting along southern Brazil and Namibia [PDF]

open access: yes, 2017
Plate restoration of South America and Africa to their pre-breakup position faces the problem of gaps and overlaps between the continents, an issue commonly solved with implementing intra-plate deformation zones within South America.
Koehn, Daniel   +2 more
core   +1 more source

The Lomagundi-Jatuli carbon isotopic event recorded in the marble of the Tandilia System basement, Río de la Plata Craton, Argentina [PDF]

open access: yes, 2019
The “Lomagundi-Jatuli event” corresponds to the most important δ13C positive anomaly (≥5‰) globally reported in Palaeoproterozoic marine carbonates (between ∼2.30 and 2.06 Ga).
Ballivian Justiniano, Carlos Alberto   +6 more
core   +1 more source

Inland extent of the Weddell Sea Rift imaged by new aerogeophysical data [PDF]

open access: yes, 2012
Peer ...
Bingham, Robert George   +8 more
core   +1 more source

Retraction Note: Synthesis and photoluminescence properties of CaMgAl10O17:Sm3+ phosphor for n-UV solid-state lighting (PCSS: (2024), 25(2), (245-249), https://doi.org/10.15330/pcss.25.2.245-249)

open access: yesФізика і хімія твердого тіла
The Editor-in-Chief has retracted this article. The PCSS has retracted paper "Synthesis and photoluminescence properties of CaMgAl10O17:Sm3+ phosphor for n-UV solid-state lighting".
R.M. Yerojwar   +4 more
doaj   +1 more source

Late Ordovician scolecodonts and chitinozoans from the Pin Valley in Spiti, Himachal Pradesh, northern India [PDF]

open access: yesActa Palaeontologica Polonica
The end of the Ordovician witnessed major perturbations in the ecosystem, seriously affecting global marine biodiversity. Nevertheless, some marine organism groups and their crisis-bound palaeogeographic distribution are still understudied.
PETRA TONAROVÁ   +8 more
doaj   +1 more source

The lichen genera Gondwania and Transdrakea gen. nov. ( Teloschistaceae ) - speciation in three southern continents

open access: yesPlant and Fungal Systematics, 2023
Within the lichen family Teloschistaceae , a high number of genera are restricted to the extreme southern part of the Southern Hemisphere. The taxonomy and phylogeny of the southern genus Gondwania have been analyzed based upon fieldwork in Antarctica,
Ulrik Søchting   +2 more
doaj   +1 more source

Diversity of Cretaceous continental actinopterygians from Argentina, South America [PDF]

open access: yesResearch & Knowledge, 2017
South America holds a signiicant number of continental ish-bearing deposits of Cretaceous age. The principal purpose of the current article is to illustrate the diversity of continental actinopterygian assemblages of the main Cretaceous localities from ...
P. Guillermina Giordano
doaj   +1 more source

Early Cambrian U-Pb zircon age and Hf-isotope data from the Guasayán pluton, Sierras Pampeanas, Argentina: implications for the northwestern boundary of the Pampean arc [PDF]

open access: yes, 2016
An Early Cambrian pluton, known as the Guasayán pluton, has been identified in the central area of Sierra de Guasayán, northwestern Argentina. A U?Pb zircon Concordia age of 533 ± 4 Ma was obtained by LA-MC-ICP-MS and represents the first report of ...
Alasino, Pablo Horacio   +8 more
core   +2 more sources

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