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Publicatii proprii

Salpingoporella? popgrigorei, a new species of Dasycladales (calcareous algae) from the Lower Aptian deposits of Pădurea Craiului (northern Apuseni Mountains, Romania)

A new dasycladalean alga Salpingoporella? popgrigorei n. sp. was identified in Pădurea Craiului Mountains (northern Apuseni, Romania) in the Lower Aptian limestone of the Valea Bobdei Member. The new alga was found within the external platform coarse bioclastic facies with fragments of corals, sclerosponges, bivalves (including rudists), gastropods, echinoderms, brachiopods, and bryozoans. The micropaleontological assemblage consists of foraminifera,

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Relationship between algae and environment: an Early Cretaceous case study, Trascău Mountains, Romania)

The relationship between algae and depositional environment was studied in a limestone succession of Berriasian–Valanginian age. Several depositional environments were recorded from shallow subtidal to intertidal and supratidal, with salinity ranging from normal marine to fresh and/or supersaline water. The algal assemblages consist mainly of dasycladaleans, rivulariacean-type cyanobacteria and charophytes. Nipponophycus (Bryopsydales) and Lithocodium-Bacinella

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Neocomian microfossil association from the Taft area near Yazd (Central Iran)

An assemblage of microfossils, including calcareous green algae (dasycladaleans:Deloffrella quercifoliipora, Bakalovaella elitzae, Salpingoporella cf.muehlbergii, Terquemella sp.,Neomeris sp., andCylindroporella? sp.; Halimedaceans/Gymnocodiaceans:Boueina sp.Permocalculus aff.minutus), red algae (Solenoporaceans?:Marinella lugeoni), cysts of dinoflagellates? (Cadosina fusca fusca, Colomisphaera aff.conferta) and foraminifers (Torinosuella peneropliformis,

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Middle Triassic dasyclad algae from Guizhou, China

A rich and diverse association of dasyclad algae occurs in the Middle Triassic rocks cropping out in Guizhou Province, China, including Macroporella alpina, Macroporella dinarica, Diplopora annulata, Diplopora annulatissima, Diplopora sinica n. sp., Pseudodiplopora proba n. gen., n. comb., and Julpiaella subtilis n. gen., n. comb. Study of this assemblage offered the opportunity to discuss the complex taxonomy of Diplopora-like dasyclads. A review

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Calpionellids and calcispheres from the Upper Jurassic-Lower Cretaceous deposits in the Reşiţa-Moldova Noua zone, Southern Carpathians, Romania

An assemblage of calpionellids and calcispheres identified in five lithostratigraphic units allows the identification of eight biozones in the upper Oxfordian-Hauterivian interval. Since the biozonation according to calpionellids has already been accurately defined by Pop (1974, 1989) for the Marila Limestones and Crivina Marls, the novelty of our approach resides mainly in the extension of this biozonation to the over- and underlying lithostratigraphic

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A new occurrence of Triassic deposits NE of Oraviţa (Southern Carpathians, Rumania) and its paleotectonic significance

Until recently, in the western part of the South Carpathians Triassic deposits were only known south of the Nera River between Sasca Montană and Moldova Nouă, belonging to the Sasca-Gornjak structural unit (Săndulescu 1975). Core analysis of a borehole drilled NE of Oravita (Brădisorul de Jos) led to the identification of a Triassic formation of the same type and age (Early-Middle Triassic) about 20 km further northerly than previously known.

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Maximum principles and isoperimetric inequalities for some Monge-Ampere type problems
Maximum and minimum principles for a class of Monge-Amp`ere equations in the plane, with applications to surfaces of constant Gauss curvature
The Civic Alliance Party
Power and Opposition: The Semantics of the Official Discourse during the First Months after December 1989