Results 1 to 10 of about 4,344 (221)

New insights on the Early Cretaceous (Hauterivian–Barremian) Urgonian lithostratigraphic units in the Jura Mountains (France and Switzerland): the Gorges de l’Orbe and the Rocher des Hirondelles formations [PDF]

open access: yesSwiss Journal of Geosciences, 2021
The Hauterivian–Barremian series of the Jura Mountains were measured over more than 60 sections along a 200 km long transect between Aix-les-Bains (Savoie Department, France) and Bienne (Bern Canton, Switzerland), which prompted the need for a revision ...
Antoine Pictet
doaj   +2 more sources

Mediterranean Neocomian belemnites, part 3: Valanginian-Hauterivian belemnites [PDF]

open access: yesCarnets 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.
doaj   +3 more sources

The first occurrence of “Plesiochelyidae” marine turtles in the Early Cretaceous of South America [PDF]

open access: yesSwiss Journal of Palaeontology
Thalassochelydians represent one of the earliest radiations of coastal to marine-adapted turtles, spanning from the Jurassic to Cretaceous periods. This study describes Craspedochelys renzi sp.
Edwin-Alberto Cadena   +5 more
doaj   +2 more sources

New ichnological findings in Hauterivian sandstones of Mountainous Adygeya

open access: yesИзвестия высших учебных заведений: Геология и разведка
Background. Trace fossils are highly informative objects for geological investigations. However, the information about their distribution in sedimentary settings lacks completeness.
D. A. Ruban   +3 more
doaj   +2 more sources

A review of Mawsonia from the Ilhas Group, Marfim Formation (? Late Hauterivian), Recôncavo Basin [PDF]

open access: yesResearch & Knowledge, 2017
The Mawsoniidae family includes six genera Chinlea, Diplurus, Trachymetopon, Parnaibaia, Mawsonia and Axelrodichthys with an almost worldwide occurrence ranging from the Triassic to the Late Cretaceous.
Camila Cupello   +2 more
doaj   +2 more sources

Lower Cretaceous Fossil Site near Leše: First Heteromorphic Ammonoid Site in Slovenia and Karawanken/Karavanke UNESCO Global Geopark [PDF]

open access: yesGeoconservation 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
doaj   +1 more source

Early Cretaceous ammonites and dinoflagellates from the Western Tatra Mountains, Poland [PDF]

open access: yesActa 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
doaj   +1 more source

Biostratigraphy and Facies Analysis of Upper Valanginian-Upper Hauterivian (Sarmord Formation) in Maten Anticline, Northern Iraq

open access: yesIraqi Geological Journal, 2021
Biostratigraphical and sedimentological study of the Sarmord Formation (Upper Valanginian - Upper Hauterivian) at the southern limb of Maten anticline is conducted within a well-exposed section.
Mohammed Al-Abbasi   +2 more
doaj   +1 more source

Lower Cretaceous heteromorph ammonites (Ancyloceratina) from Leše near Prevalje (North Karavanke Mts. NE Slovenia)

open access: yesGeologija, 2020
The paper deals with newly discovered Valanginian-Hauterivian fauna of heteromorphic ammonites (Ancyloceratina) from locality south of the village of Leše above the Meža River valley (North Karavanke Mountains).
Matija KRIŽNAR   +2 more
doaj   +1 more source

Structure and formation of the Lower Cretaceous–Eocene section in the central part of the Simferopol Uplift

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2022
This article provides the first detailed description of the 25-m thick Cretaceous–Eocene section near the Mazanka village and its stratigraphic subdivision.
K.A. Dubkova   +3 more
doaj   +1 more source

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