The new species of the genus Neomeris - Neomeris mokragorensis sp. nov. described in this paper from western Serbia originates: from the Albian of Mokra Gora (the succession transgrading on the serpentinite) and from the Turonian of the Skrapež-Kosjerić area (the succession transgrading on the Carboniferous). The presence of this species has been noted in the Turonian of the Kukes and in the Santonian of the Metohija Cretaceous Unit (Mirdita Zone). In the surrounding of Podgorica (Dinaric Carbonate Platform, Montenegro), the same species previously was presented as Neomeris cf cretacea STEINMANN. Well preserved Neomeris specimens from the Turonian to the Santonian strata of the Northern Calcareous Alps (Gosau Group, Austria) previously described as Neomeris circularis BADVE & NAYAK, is assigned to Neomeris mokragorensis sp. nov. Neomeris mokragorensis is characterized by a thin loosed skeleton formed only around ampullae, by which, besides the form of the ampullae, this species is clearly distinct from Neomeris cretacea (Steinmann)
A rich diversified algal microbiota is described from the lowermost Valanginian limestone reworked in the Upper Cretaceous elastics of the Metohija Cretaceous Unit (Mirdita Zone). Two new dasycladalean taxa are introduced: Zujovicella nov. gen. (type species Suppiluliumaella gocanini Radoičić, 1972) and Furcoporella vasilijesimici nov. sp. Microbiota of this bioclastic limestone (containing dominantly corals and other metazoan fragments) consists of algae, microbial epiliths, microproblematica, foraminifera, calcispongie and a few calpionellids of the Calpionellopsis Zone - Calpionellopsis oblonga (Cadisch), Remaniella cadischiana (Colom), Tinntinopsella carpathica (Murgeanu & Filipescu). Besides the new taxa dasycladales also associated are: Salpingoporella pygmaea (Gumbel), Salpingoporella sp., Gyroporella lukicae Sokač & Velić, Neomerinae and several indetermined taxa. Lithocodium aggregatum (Elliott), other encrusting Lithocodioidea and different microbial epiliths are an important component of this microbiota association. Foraminiferal assemblage consists of: Coscinophragma cf. C. cribrosum (Reuss), Mohlerina basiliensh (Mohler), Nautiloculina bronnimanni Arnaud-Vanneau & Peybernes, Neotrocholina valdensis Reichel, Neo-trocholina sp. Placopsilina sp., Protopeneroplis trochangulata Septfontaine, Trocholina alpina (Leupold), Trocholina delphinensis Arnaud-Vanneau, Boisseau & Darsac, Trocholina sp., lituolids, miliolids and other small benthic taxa. The analyzed lowermost Valanginian limestone originated from the topmost sequence of the Tithonian-Neocomian cycle which ended as a consequence of the Main Cimmerian Events, which occerred, as in the Vardar zone, after the lowermost Valanginian. Cretaceous cycle (Mirdita Crtaceous Unit) begins in the Hauterivian
The fossil renamed here was first described in 1959 as Aeolisaccus kotori RADOIČIĆ, a new species of a problematic fossil worm, Aeolisaccus ELLIOTT. In 1975 DE CASTRO recognized the true relationships of this microbial fossil: a cyanobacterium related closely to the modern genus Scytonema. The fossil is common in the sediments of the Mesozoic carbonate platforms of southern Europe. This contribution confirmed DE CASTRO's interpretation, determined, using the high resolution of the SEM, the extent to which these fossils have preserved their original architecture, and investigated their presumed modern counterparts among the abundant mat-forming species of Scytonema on the intertidal flats of Andros Island, a part of the Bahama carbonate platform. The systematic affinities of the fossil and the environments it inhabited were reconstructed by comparing the morphology of the fossils to that of their modern counterparts, along with their respective sedimentary contexts. Based on these comparisons, we conclude that the organism lived in a peritidal environment and was buried and fossilized in the shallow waters of an ancient carbonate platform. A formal transfer of the fossil to a new genus of fossil cyanobacteria thereby designated as Decastronema gen. nov. is proposed, honoring the contribution of Prof. Piero DE CASTRO to paleontology.
Two new dasycladalean species from the Upper Cretaceous of the Mountain Pastrik, Kukes Cretaceous Unit of the Mirdita Zone are described: Trinocladus divnae sp. nov. is characterized by variable size of the thallus, relatively narrow main axis, typical Trinocladus organization of the laterals and thin calcification limited to the distal part of the thallus which includes a swollen part of secondaries and short tertiaries. Often, the internal portion of the whorls (except sometimes the main stem membrane), tends to dissolve and form dissolution cavities filled with cement. Montiella filipovici sp. nov. is characterized by a primary skeleton made of a thin individual sheath around a fertile ampullae, often obliterated by recrystallization. Four to six laterals, each giving one secondary and one fertile ampulla located on the upper side of the relatively thick short primary lateral. Upper Cenomanian limestone with Cisalveolina fraasi and Trinocladus divnae sp. nov. was deposited immediately before the events that resulted in sea level rising. The middle and upper Cenomanian eustatic-tectonic processes had different effects in the Pastrik shallow water areas, depending on the distance from the basinal part of the Unit. Bathymetric changes in a part of the Pastrik sedimentary area were not significant, even negligible. Montiella filipovici is found in the post-fraasi shallow water sequence, assigned to the ?uppermost Cenomanian-lowermost Turonian (= Whiteinella archaeocretacea Zone p. p.; a short stratigraphic gap, in a part of the area, is noted). Shallow water limestone with Turonian taxa, corresponding to the helvetca Zone, occurs a few meters upward. Supplementary note: the species Cylindroporella parva RADOICIC is transferred in the genus Montiella, the species Permocalculus elliotti JOHNSON is transferred in the genus Trinocladus, while the species Trinocladus bellus YU JING is transferred in the genus Belzungia.
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