Results 11 to 20 of about 843 (161)

Middle Aptian Orbitolinid limestones in Belgrade (Serbia): microfacies and depositional environment

open access: yesGeologia Croatica, 2023
Lower Cretaceous (Aptian) shallow-marine limestones with intercalated polymictic conglomerates were investigated with respect to their biostratigraphic age and their microfacies. They are the younger part of the generally carbonate-siliciclastic Lower Cretaceous deep-water (max. few hundred metres) turbiditic sequences (“Paraflysch”) of the so-called
Đorđević, Bojana   +4 more
openaire   +2 more sources

Mid-Cretaceous paleoenvironmental changes in the western Tethys [PDF]

open access: yesClimate of the Past, 2018
We present a continuous record of surface water temperature and fertility variations through the latest Barremian–Cenomanian interval (ca. 27 Myr) based on calcareous nannofossil abundances from the western Tethys.
C. Bottini, E. Erba
doaj   +1 more source

Ornithischian dinosaurs in Southeast Asia: a review with palaeobiogeographic implications [PDF]

open access: yesFossil Record, 2023
Ornithischian dinosaurs have been discovered in Thailand, Laos, and Malaysia. These bird-hipped herbivores remain relatively rare by comparison with saurischian dinosaurs.
Sita Manitkoon   +4 more
doaj   +3 more sources

Migration Routes of the Aptian to Turonian Ostracod Assemblages from North Africa and the Middle East [PDF]

open access: yesPaleontology Journal, 2014
Quantitative paleobiogeography is a powerful tool for detecting the migration routes of microfossils. This is factual and applicable when we select appropriate analyses for proper problems in the following manner. The quantitative study of 43 selected ostracod species (total of 136 species) from 11 countries of North Africa and the Middle East led to ...
Ashraf M. T. Elewa, Omar Mohamed
openaire   +1 more source

Taxonomic diversity dynamics of early cretaceous brachiopods and gastropods in the Azerbaijanian domains of the Lesser Caucasus (Neo-Tethys Ocean) [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2014
Palaeontological data available from the Azerbaijanian domains (Somkhit-Agdam, Sevan-Karabakh, and Miskhan-Kafan tectonic zones) of the Lesser Caucasus permit reconstruction of the regional taxonomic diversity dynamics of two groups of Early ...
Ruban Dmitry A.
doaj   +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

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

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

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

open access: yesThe Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano   +3 more
wiley   +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

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