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Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
New Insights Into Troglotella Incrustans Wernli & Fookes, 1992, A Fascinating Upper Jurassic-Upper Cretaceous Foraminifer, Felix Schlagintweit
New Insights Into Troglotella Incrustans Wernli & Fookes, 1992, A Fascinating Upper Jurassic-Upper Cretaceous Foraminifer, Felix Schlagintweit
Studia UBB Geologia
New data about the highly variable test morphology of the benthic foraminifer Troglotella incrustans WERNLI & FOOKES (Oxfordian-Lower Cenomanian) are presented, permitting an emended species/genus diagnosis. This concerns mainly the existence of a large final chamber with fistulose extensions that may follow the uniserial or the irregular-branching test part. The way of life of T. incrustans (cryptoendolithic vs. euendolithic) is discussed against the background of different existing models in the literature. The study is based on material (thin-sections and provided photographs) mainly from the Upper Jurassic of Austria, Italy, Romania, Ukraine, and also the type-locality of France.
Anomalinoides Dividens Bioevent At The Badenian/Sarmatioan Boundary – A Response To Paleogeographic And Paleoenvironmental Chnages, Sorin Filipescu
Anomalinoides Dividens Bioevent At The Badenian/Sarmatioan Boundary – A Response To Paleogeographic And Paleoenvironmental Chnages, Sorin Filipescu
Studia UBB Geologia
Recent investigations on the microfauna at the Badenian / Sarmatian boundary (Middle Miocene) showed interesting characters of the Anomalinoides dividens foraminifera assemblages. Several taxonomic aspects are considered in order to clarify the meaning of different stratigraphic approaches. A possible planktonic or pseudo-planktonic life of the species is suggested by micropaleontologic, paleogeographic and paleoenvironmental data.
Quelques Donnees Micropaleontologiques Qui Indiquent La Presence Du Badenien (Inferieur Et Superieur) A Cluj-Napoca (Roumanie), Anca-Andreea Suciu
Quelques Donnees Micropaleontologiques Qui Indiquent La Presence Du Badenien (Inferieur Et Superieur) A Cluj-Napoca (Roumanie), Anca-Andreea Suciu
Studia UBB Geologia
Some Micropaleontological data indicating the presence of (lower and upper) Badenian at Cluj-Napoca (Romania). In the central part of the city of Cluj-Napoca some excavations (in Cetăt̡uia Hill), drillings and waste-water collecting galery (at Abator Place) intercepted the Badenian deposits. The age of deposits from Cetăt̡uia Hill is lower Badenian. The analysis of the micropaleontological samples collected from the Badenian deposits (from Abator Place - drillings and waste - water collecting galery), revealed the presence of foraminifers and pteropods, of the lithostratigraphic unit “Spirialis marls”, indicating for the first time, at Cluj-Napoca, the presence of the upper Badenian.
Wielician Foraminifera At The Western Border Of The Transylvanian Basin, Sorin Filipescu
Wielician Foraminifera At The Western Border Of The Transylvanian Basin, Sorin Filipescu
Studia UBB Geologia
Marine Middle Miocene deposits at the top of Gârbova de Sus Formation preserve a particular foraminifera assemblage, with both benthic and planktonic taxa. Presence of several biostratigraphic significant species allowed an extension of the known age of the formation, up to Wielician. The morphogroups also suggest a deeper environment, compared to the rest of the formation. The change of fauna type at this level might be correlated to the start of a new global cycle.
Upper Jurassic And Lower Cretaceous Sedimentary Formations From The Valcan Mountains (South Carpathians), Grigore Pop, Ioan I. Bucur
Upper Jurassic And Lower Cretaceous Sedimentary Formations From The Valcan Mountains (South Carpathians), Grigore Pop, Ioan I. Bucur
Studia UBB Geologia
The litho- and biostratigraphy of the Upper Jurassic-Lower Cretaceous formations cropping out in the southwestern part of Vâlcan Mountains is presented. Five formations were recognised in the studied area: Valea Pragurilor Formation, Valea Cheii Formation, Topeşti Formation, bioclastic-oolitic limestones from Sudoieşi valley and Izvarna Formation. The age of these formations is mainly based on foraminifera and calcareous algae.