Results 191 to 200 of about 7,296 (255)

Early Cretaceous Radiation of Teleosts Recorded by the Otolith-Based Ichthyofauna from the Valanginian of Wąwał, Central Poland

Journal of Vertebrate Paleontology, 2022
We report a Valanginian (Early Cretaceous) otolith-based ichthyofauna from a section at Wąwał in central Poland. We describe one new genus (Palaeoargentina gen. nov.), six new otolith-based species (Pteralbula polonica sp.
Maciej K. Pindakiewicz, K. Hryniewicz, A. Kaim   +2 more
semanticscholar   +1 more source

Mineralogy and geochemistry of deeply-buried marine sediments of the Vaca Muerta-Quintuco system in the Neuquén Basin (Chacay Melehue section), Argentina: Paleoclimatic and paleoenvironmental implications for the global Tithonian-Valanginian reconstructions

, 2021
The Vaca Muerta-Quintuco (VM-Q) system of Tithonian-early Valanginian age was studied in the Chacay Melehue section of the Neuquen Basin (western Argentina) by means of sedimentological, mineralogical and geochemical analyses in order to determine the ...
I. Capelli, R. Scasso, J. Spangenberg, D. Kietzmann, F. Cravero, M. Duperron, T. Adatte   +6 more
semanticscholar   +1 more source

Climate and paleoceanography controlled size variations of calcareous nannofossils during the Valanginian Weissert Event (Early Cretaceous)

Marine Micropaleontology, 2020
Strata of Valanginian age (Early Cretaceous, 139.8–132.9 Ma) record a 1.5‰ positive carbon isotope excursion (CIE), the Weissert Event. It coincides with volcanic activity of the Parana-Etendeka large igneous province.
André Bornemann, Joerg Mutterlose
exaly   +2 more sources

Arctic reappraisal of global carbon-cycle dynamics across the Jurassic–Cretaceous boundary and Valanginian Weissert Event

, 2020
Late Jurassic – Early Cretaceous global carbon-cycle dynamics have mainly been inferred from Tethyan, Atlantic and Pacific carbon-isotope (δ13C) records.
Mads E. Jelby, K. Śliwińska, M. Koevoets, P. Alsen, Madeleine L. Vickers, S. Olaussen, L. Stemmerik   +6 more
semanticscholar   +1 more source

Bathonian and Valanginian fossils from Honduras

Geobios, 1993
Abstract The Agua Fria Formation of Honduras, Chortis Block, consists approximately of 200 or more meters of beds of gray, quartzose sandstone alternating with beds of gray and/or black shale. From this formation Mark Gordon has collected Choffatia s.l. sp. juv. (or a leptosphinctine) and Iniskinites (?) cf. andinus ( Burckhardt 1903).
Mark Gordon, Keith Young
openaire   +1 more source

A new dicraeosaurid sauropod from the Lower Cretaceous (Mulichinco Formation, Valanginian, Neuquén Basin) of Argentina

Cretaceous Research, 2019
A new dicraeosaurid sauropod, Pilmatueia faundezi gen. et sp. nov. from the Mulichinco Formation (Valanginian, Lower Cretaceous, Neuquen Basin, Argentina) is based on isolated skeletal remains collected from a single stratigraphic level, relatively close
Rodolfo A Coria, Guillermo José Windholz, Francisco Ortega   +2 more
exaly   +2 more sources

Taxonomic revision and palaeobiogeographic affinities of Berriasian–Valanginian oysters from the Vaca Muerta and Mulichinco formations, southern Mendoza, Neuquén Basin, Argentina

, 2020
Oysters are very abundant in marine Jurassic–Cretaceous deposits across the world, which has led to multiple taxonomic studies since the nineteenth century.
A. G. Toscano, D. Lazo
semanticscholar   +1 more source

Carbonate ecosystem and environmental evolution during the Valanginian–Barremian: Discussion on possible controlling factors in the Apennine Carbonate Platform record (Italy)

, 2020
Shallow-water carbonate records are often characterised by low stratigraphic resolution and poor chronostratigraphic calibration despite abundant and diversified fossil content.
S. Amodio, F. Barattolo, M. Martino
semanticscholar   +1 more source

The Lower Cretaceous (Berriasian and Valanginian) in NW Germany

Cretaceous Research, 1996
Abstract The non-marine sedimentary successions of the Berriasian and lower Valanginian of NW Germany are described. The stratigraphical distribution of ostracods allow this interval to be subdivided into 10 biozones, which can be used for regional correlation in the central part of the NW German Basin.
Franz Elstner, Jörg Mutterlose
openaire   +1 more source

Cyclostratigraphy of an upper Valanginian – lower Hauterivian mixed siliciclastic-carbonate ramp succession (Pilmatué Member of the Agrio Formation), Loma La Torre section, northern Neuquén Basin, Argentina

Cretaceous research (Print), 2019
Detailed sedimentological and stratigraphical studies were performed in the Pilmatue Member of the Agrio Formation at Loma La Torre area, to recognize orbital signals in the Valanginian–Hauterivian of the Neuquen Basin.
D. Kietzmann, Sebastián M. Paulin
semanticscholar   +1 more source