Mercury enrichment indicates volcanic triggering of Valanginian environmental change. [PDF]
Sci Rep, 2017 AbstractThe Valanginian stage (Early Cretaceous) includes an episode of significant environmental changes, which are well defined by a positive δ13C excursion. This globally recorded excursion indicates important perturbations in the carbon cycle, which has tentatively been associated with a pulse in volcanic activity and the formation of the Paraná ...
Charbonnier G +5 more
europepmc +5 more sources
THE VALANGINIAN WEISSERT OCEANIC ANOXIC EVENT RECORDED IN CENTRAL-EASTERN SARDINIA (ITALY)
Rivista Italiana di Paleontologia e Stratigrafia, 2018 Investigations on the S’Ozzastru section from the northern part of the Mt Albo area (central-eastern Sardinia, Italy) for integrated litho- bio- and chemostratigraphy allowed the identification of the Valanginian Weissert Oceanic Anoxic Event (OAE ...
CINZIA BOTTINI +4 more
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An anhanguerian pterodactyloid mandible from the lower Valanginian of Northern Germany, and the German record of Cretaceous pterosaurs [PDF]
Acta Palaeontologica Polonica, 2021 The record of Cretaceous pterosaur remains from Germany is sparse. The material recovered to date includes the fragmentary holotypes of Targaryendraco wiedenrothi and Ctenochasma roemeri, as well as a few isolated pterodactyloid teeth and some ...
Pascal Abel +3 more
doaj +2 more sources
Valanginian occurrence of Pelomedusoides turtles in northern South America: revision of this hypothesis based on a new fossil remain [PDF]
PeerJ, 2020 Pelomedusoides constitutes the most diverse group of Mesozoic and Cenozoic side-necked turtles. However, when it originated is still being poorly known and controversial.
Edwin-Alberto Cadena
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Effects of paleogeographic changes and CO2 variability on northern mid-latitudinal temperature gradients in the Cretaceous [PDF]
Nature Communications, 2023 The Cretaceous ‘greenhouse’ period (~145 to ~66 million years ago, Ma) in Earth’s history is relatively well documented by multiple paleoproxy records, which indicate that the meridional sea surface temperature (SST) gradient increased (non-monotonically)
Kaushal Gianchandani +6 more
doaj +2 more sources
Ankylosaur remains from the early cretaceous (valanginian) of northwestern Germany.
PLoS ONE, 2013 A fragmentary cervico-pectoral lateral spine and partial humerus of an ankylosaur from the Early Cretaceous (early Valanginian) of Gronau in Westfalen, northwestern Germany, are described.
Sven Sachs, Jahn J Hornung
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Mediterranean Neocomian belemnites, part 3: Valanginian-Hauterivian belemnites [PDF]
Carnets de Géologie, 2009 The classical papers of Raspail (1829, 1830) and Duval-Jouve (1841) described a wide range of belemnite species, mainly from the Lower Cretaceous of the Castellane-Peyroules area (Alpes de Haute-Provence, France).
Janssen Nico M.M.
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Lower Cretaceous Fossil Site near Leše: First Heteromorphic Ammonoid Site in Slovenia and Karawanken/Karavanke UNESCO Global Geopark [PDF]
Geoconservation Research, 2021 The cross-border Geopark Karawanken/ Karavanke was established in 2011 to reflect the diverse geological composition and varied and rich natural and cultural heritage of the area.
Matija Križnar +5 more
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Recurrent volcanic activity recorded in araucarian wood from the Lower Cretaceous Springhill Formation, Patagonia, Argentina: Palaeoenvironmental interpretations [PDF]
Acta Palaeontologica Polonica, 2021 This paper describes a petrified trunk collected from a conglomerate bed of the Springhill Formation (Berriasian–Valanginian) in the Estancia El Álamo locality, Santa Cruz Province, Argentina.
Georgina M. Del Fueyo +3 more
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Early Cretaceous ammonites and dinoflagellates from the Western Tatra Mountains, Poland [PDF]
Acta Palaeontologica Polonica, 2020 The first Early Cretaceous (Valanginian–Hauterivian) ammonite fauna from the lower part of the Kościeliska Marl Formation (Wściekły Żleb Member) of the Lower Sub-Tatric (Krížna) Nappe, in the Lejowa Valley of the Tatra Mountains are described.
Zdeněk Vašíček +6 more
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