Results 21 to 30 of about 1,827,079 (176)

Microborings in mid Cretaceous fish teeth [PDF]

open access: yes, 1999
Fish teeth and other remains from the British Cretaceous contain abundant evidence for post-mortem colonization by endolithic organisms. The borings are here recognised as occurring in three morphotypes, including a flask-shaped form not previously ...
Veltkamp, K.J.   +5 more
core   +1 more source

MIDDLE JURASSIC-LOWER CRETACEOUS BIOSTRATIGRAPHY IN THE CENTRAL PONTIDES (TURKEY): REMARKS ON PALEOGEOGRAPHY AND TECTONIC EVOLUTION

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 1998
The deposition of Jurassic-Lower Cretaceous carbonates in the Pontides was controlled mainly by the evolution of an Atlantic-type continental margin in the Tethys.
BORA ROJAY, DEMIR ALTINER
doaj   +1 more source

Evidence of early Aptian Oceanic Anoxic Event 1a (OAE1a) in the Central Kopet-Dagh (Qaleh-Zoo section), with special reference to the calcareous nannofossil assemblages [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2019
In the current study, a succession from the middle part of the Sarcheshmeh Formation was investigated to record the early Aptian oceanic anoxic event 1a (OAE1a) at the Qaleh-Zoo section in the central part of the Kopet-dagh Basin.
Azam Gholami Fard   +4 more
doaj   +1 more source

An Early Cretaceous mesophotic coral ecosystem built by platy corals (middle Aptian, Southern Carpathians, Romania)

open access: yesCretaceous Research, 2020
Abstract A low relief middle Aptian (Gargasian) reef built by platy corals is described from the Lower Cretaceous succession of the Resiţa–Moldova Noua zone (Southern Carpathians, SW Romania). Two coral-bearing units, 16–17 and 38–42 m thick, discontinuously cover ca. 1100 m. This is an unusually thick fossil reef to be built by platy corals.
Kołodziej, Bogusław, Bucur, Ioan I.
openaire   +2 more sources

The postcranial skeleton of monolophosaurus jiangi (dinosauria: Theropoda) from the Middle Jurassic of Xinjiang, China, and a review of Middle Jurassic Chinese theropods [PDF]

open access: yes, 2010
The Middle Jurassic was a critical time in the evolution of theropod dinosaurs, highlighted by the origination and radiation of the large-bodied and morphologically diverse Tetanurae.
Benson, R. B. J.   +11 more
core   +1 more source

Ore content of Avramivske and Zakhidne deposits (Novomyrhorod gabbro-anorthosite massif)

open access: yesМінеральні ресурси України
The geological structure and ore content of the Avramivske and Zakhidne phosphate-titanium deposits located in the southern part of the Korsun-Novomyrhorod pluton are characterized. Within these deposits, phosphate-titanium mineralization is contained in
Yu. V. Kroshko, M. S. Kovalchuk
doaj   +1 more source

Onset of an Aptian carbonate platform overlying a Middle-Late Jurassic radiolaritic-ophiolithic mélange in the Mirdita Zone of Albania

open access: yesGeologia Croatica, 2012
Late Jurassic and Early Cretaceous carbonate sediments of different age and facies, form the post-emplacement settings on top of the Mirdita Ophiolite Zone in northern Albania. They seal the early Late Jurassic emplacement of the ophiolite knappes, are the only datable relics overlying the ophiolites in the Late Jurassic - Early Cretaceous, aiding the ...
Schlagintweit, Felix   +4 more
openaire   +4 more sources

Palaeoecological importance of trace fossils from the Permian, Jurassic and Cretaceous deposits of Mountainous Adygeya

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2015
Trace fossils may be of crucial importance for palaeoenvironmental reconstructions, which is demonstrated by example of new ichnological finds in Mountainous Adygeya.
E. E. Plyusnina   +3 more
doaj   +1 more source

MORPHOLOGY, TAXONOMY AND DISTRIBUTION OF THE CRETACEOUS CORAL GENUS PARONASTRAEA (BARREMIAN-CENOMANIAN; SCLERACTINIA)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2006
The middle Cretaceous genus Paronastraea Beauvais, 1977 is being revised on the basis of sample material available from Italy, France, Germany, and Greece.
HANNES LÖSER
doaj   +1 more source

Integrated cyclostratigraphy of the Cau core (SE Spain) - a timescale for climate change during the early Aptian Anoxic Event (OAE 1a) and the late Aptian [PDF]

open access: yes
We report a cyclostratigraphic study performed on the Cau core (Spain), which is considered an Aptian stratigraphic reference for global correlation and paleoenvironmental reconstruction.
Batenburg, Sietske J   +17 more
core   +1 more source

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