First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina [PDF]
, 2014 Thirty-four taxa were documented from six palynologically productive samples of the La Yesera Formation (Brealito and Don Bartolo Members) in the Pucará locality (Salta Province, northwestern Argentina).
Narvaez, Paula Liliana +2 more
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High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary [PDF]
, 2019 The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different ...
Aguirre-Urreta, Maria Beatriz +10 more
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The History of the Aptian Stage Stratigraphy and Ammonoids of the Central Part of the Northern Caucasus Studies. Paper 1. 19th Century to 1969 [PDF]
Известия Саратовского университета. Новая серия: Серия Науки о ЗемлеThe offering paper covers the history of the Aptian stage stratigraphy and ammonites studies of the central part of the Northern Caucasus, which was subdivided by the author into five stages. The first (mid-to-late 19th century), second (1901–1951)
Polkovoi, Kirill Sergeevich
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Lower Cretaceous (Hauterivian-Albian) ammonite biostratigraphy in the Maestrat Basin (E Spain) [PDF]
, 2014 Peer reviewedPublisher ...
Bover-Arnal, T. +11 more
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Upper Aptian calcareous algae from Padurea Craiului (Northern Apuseni mountains, Romania)
Geologia Croatica, 2008 A study of calcareous strata previously assigned to the Barremian-Early Aptian interval in the northwestern part of P?durea Craiului, (Apuseni Mountains), led to the identification of a micropaleontological association indicative of a Late Aptian age ...
Ioan I. Bucur +2 more
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Rivista Italiana di Paleontologia e Stratigrafia, 2017 Within the "Calcare di Bari" Formation (Valanginian p.p.-Cenomanian) the Aptian is characterized by three lithostratigraphic members: the Palorbitoline limestone Member and the Corato limestone Member, mainly early Aptian in age (Bedoulian); the ...
ELENA LUPERTO SINNI, JEAN PIERRE MASSE
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Response and Recovery of the Comanche Carbonate Platform Surrounding Multiple Cretaceous Oceanic Anoxic Events, Northern Gulf of Mexico [PDF]
, 2015 The ubiquity of carbonate platforms throughout the Cretaceous Period is recognized as a product of high eustatic sea-level and a distinct climatic optimum induced by rapid sea-floor spreading and elevated levels of atmospheric carbon-dioxide.
Da-Gama, Rui O.B.P. +5 more
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Echinoids of the Genus Tetragramma Agassiz (Phymosomatoida) from the Aptian Sediments of the Basab Region, Northwest of Kerman, Iran [PDF]
Journal of Sciences, Islamic Republic of Iran, 2013 The echinoid fauna of Basab area (Aptian), northwest of Kerman, is fairly rich and diverse, represented by Pygaulidae, Acropeltidae, Emiratiidae, Toxasteridae, Holectypidae, Stomechinidae and Saleniidae.
M.R. Vaziri, A.L. Arab
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Investigation of palaeotemperature changes trend in Aptian–Albian carbonate deposits of the Zagros Fold-Thrust Belt based on oxygen isotope data [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2019 I Abstract In this study, geochemical (including elemental and stable isotope) data were used for study of climatic changes during the deposition of Aptian carbonate of the Dariyan Formation in the Zagros Fold-Thrust Belt.
Seyed Mohammad Ali Moosavizadeh
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Valanginian to Barremian Benthic Foraminifera from ODP Site 766 (Leg 123, Indian Ocean) [PDF]
, 1995 A Valanginian to Barremian bathyal foraminiferal assemblage (118 taxa belonging to 51 genera) is documented from ODP Site 766, drilled near the foot of the Exmouth Plateau off northwest Australia.
Holbourn, A.E.L., Kaminski, M.A.
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