Large-sized Early Permian “caninioid” corals from the Karavanke Mountains, Slovenia

2016 ◽  
Vol 90 (6) ◽  
pp. 1049-1067 ◽  
Author(s):  
Olga L. Kossovaya ◽  
Matevž Novak ◽  
Dieter Weyer
Keyword(s):  
Southern Urals ◽  
Wide Distribution ◽  
Time Span ◽  
Lower Permian ◽  
New Taxon ◽  
Early Permian ◽  
The Southern Urals ◽  
Predominant Species ◽  
Large Numbers ◽  
Distinguishing Features

AbstractA new monospecific “caninioid” genus,Preisingerellan. gen., from the lower Permian of the Karavanke Mountains (Southern Alps, Slovenia) is erected. The type species isPreisingerella stegovnikensisn. sp. The new taxon can be differentiated from otherCaninia-type genera by its specific ontogeny and features of its dissepimentarium. Corals with such morphology had a wide distribution during the Carboniferous and early Permian, occurring in mostly shallow-water carbonate rocks. The phylogenetic relationships within this group are mostly unclear due to similarities in the adult stages. The earlier stages reveal the main distinguishing features that are decisive for a generic assignment, but these have rarely been well preserved and properly considered. The new taxon is compared with related genera of the Cyathopsidae and species ofCaninellaGorskiy, 1938 characterized by lateral dissepiments. Large numbers of specimens of the new species, representing a monospecific assemblage, have been collected from the Born Formation at Mt. Stegovnik. Sedimentological and microfacies characteristics, as well as macro- and microfossil assemblages, underline this correlation. The fusulinoidean assemblage of the Born Formation, withSphaeroschwagerina carniolica(Kahler and Kahler, 1937), as the predominant species, corresponds to the time span between theSphaeroschwagerina moelleri-Schwagerina fecundaandPseudofusulina moellerizones, indicating a late Asselian to early Sakmarian age in the Southern Urals.

scholarly journals Early Permian granitoids of the East Magnitogorsk zone (South- ern Urals): petrology, geochemistry, and geodynamic formation environment

2020 ◽  
Vol 1 (1) ◽  
pp. 47-62
Author(s):  
Timofey Nikolaevich SURIN ◽  
Keyword(s):  
Water Pressure ◽  
Southern Urals ◽  
Geodynamic Setting ◽  
Type I ◽  
Early Permian ◽  
The Southern Urals ◽  
Quartz Syenite ◽  
Crystallization Differentiation ◽  
Geochemical Study

The relevance of the problem. The Early Permian magmatism of the Southern Urals is poorly studied with the help of modern methods. The granitoid massifs of this age locally developed in the East Magnitogorsk zone contain important information about the geodynamic conditions of their formation. Clarification of this issue makes an important contribution to the understanding of the geodynamic development of the Urals. The nature of granitoids is still debatable. The connection with the massifs combined in the Balkan complex of gold-tungsten mineralization indicates the need for a comprehensive study. The purpose of the study is to determine the petrological and geochemical features of the rocks of the Balkan complex, to identify the mechanism of their petrogenesis and to establish the geodynamic conditions of their formation. Results. The petrological and geochemical study of the formations of the Balkan complex was carried out and their place in the typical taxonomy of granitoids was determined. Their belonging to the I-type is shown. Mineralogical and petrogeochemical methods were first studied for shonkinite xenoliths in granitoids. The mechanism of petrogenesis of rocks is proposed and the geodynamic setting of their formation is determined. It is shown that the monzonitemonzodiorite-quartz syenite-granosyenite-leucogranite series of rocks was formed as a result of crystallization differentiation of a single parental melting, and it was also concluded that the massifs of the complex are formed under conditions of early collision conditions with the important role of the subduction process. The mechanism of formation of the massifs of the complex is largely similar to mechanism for granitoids in other conflict areas, although it has its own specifics. Conclusions. 1). The Early Permian granitoids of the Balkan complex relates to type I. 2). All rocks of the complex, from monzonites to quartz syenites and leucogranites, including xenolith shonkinites, form a petrogenetic series formed as a result of crystallization differentiation of a single parent alkaline-gabbroic melting with increased water pressure. 3). The Balkan complex was formed in an early collisional setting under the action of deep subduction. 4). Transpression in the upper part of the crust induced formation of the massifs of the complex. 5). The Balkan complex is a kind of indicator of the growth of the newly formed crust as a result of collision and accretion processes.

scholarly journals The cochylid fauna of the Southern Ural Mountains, with description of Cochylimorpha ignicolorana Junnilainen & K. Nupponen sp. n. (Lepidoptera: Tortricidae: Cochylini)

2001 ◽  
Vol 12 (2) ◽  
Author(s):  
Kari Nupponen ◽  
Jari Junnilainen ◽  
Timo Nupponen ◽  
Vladimir Olschwang
Keyword(s):  
Male Genitalia ◽  
Southern Urals ◽  
Distribution Range ◽  
New Taxon ◽  
Ural Mountains ◽  
The Southern Urals ◽  
Dry Steppe

A list of 78 species of the tortricoid tribe Cochylini from the southern Ural Mountains is presented. The material was collected during 1996–2000 on nine different Finnish-Russian expeditions. Cochylimorpha ignicolorana Junnilainen & K. Nupponen sp. n. is described. The new taxon occurs on dry steppe slopes in the headland region of the southern Urals, and it is rather easy to separate from closely related taxa both externally and by the male genitalia. In addition, 7 species are reported as new for Europe and 4 species as new for Russia. The known distribution range of each species is given as well as further notes on some poorly known taxa.

Biostratigraphic implications of the first North American occurrence of the Upper Mississippian ammonoid Platygoniatites

1993 ◽  
Vol 67 (2) ◽  
pp. 310-313
Author(s):  
Alan L. Titus
Keyword(s):  
New Species ◽  
North America ◽  
North Africa ◽  
Southern Urals ◽  
Wide Distribution ◽  
Southern Europe ◽  
Ural Mountains ◽  
The Southern Urals ◽  
East Central ◽  
A New Species

The late Mississippian ammonoid family Delepinoceratidae is comprised of the genera Platygoniatites and Delepinoceras, and is considered one of the more biostratigraphically significant families for lower Namurian correlation (Manger et al., 1985). Platygoniatites, the earliest member, is known from eastern and southern Europe (Ruzhencev and Bogoslovskaya, 1971; Wagner-Gentis, 1963, 1980) and North Africa (Lemosquet et al., 1985). Despite its wide distribution, Platygoniatites is generally a rare member (with the exception of the southern Ural Mountains) of latest Visean and earliest Namurian faunas. It has never been reported previously from North America, though thousands of ammonoids have been collected here from age equivalent beds. The discovery of a new species of the genus in the late Mississippian faunas of east-central Nevada provides new data for precise correlation of the ammonoid zonations of Gordon (1970) to the type Namurian and indicates a need for revision of the current correlations between the southern Urals and northwestern Europe.

scholarly journals Zircons of the Permian age (280–290 Ma) from intrusive magmatic rocks in Riphean structure of the Southern Urals

LITOSFERA ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 601-608
Author(s):  
A. A. Krasnobaev ◽  
V. N. Puchkov ◽  
N. D. Sergeeva ◽  
S. V. Busharina
Keyword(s):  
Southern Urals ◽  
Lower Permian ◽  
The Urals ◽  
Shrimp Dating ◽  
The Southern Urals ◽  
Lower Paleozoic ◽  
Magmatic Rocks ◽  
Lower Riphean ◽  
Granite Complex ◽  
A Chain

Research subject. Magmatic complexes that are developed in the lower (volcanogenic-sedimentary) part of the Ai Formation of the Lower Riphean of the Taratash anticline in the Southern Urals. Results. For the frst time, the Lower Permian SHRIMP dating (288.6 ± 3.1 Ma by U-Pb method on zircon from monzogabbro) was obtained for a dike cutting the basalts of the Lower Paleozoic (420–450 Ma) age. Conclusions. On the eastern slope of the Urals there is a chain of massifs which are close in the age. The chain belongs to the Lower Permian Stepninsky monzogabbro-granosyenite-granite complex, represented by the Uiski, Vandyshevski, Biryukovski and Stepninski intrusions with the age of 281 ± 2, 280 ± 2 and 286 ± 2 Ma, correspondingly (U-Pb method after zircons, SHRIMP-II, VSEGEI) and earlier obtained dates 281 ± 4 Ma (Rb-Sr isochrone) and 283 ± 2 Ma (isotope Pb-Pb method after zircons). The Stepninsky complex was described earlier as plume-dependent. The monzogabbro dike, described in this paper, although being at a considerable distance from the Sepninsky complex, is situated at a strike of the chain of the stepninsky intrusions, is close to them by the composition and age and can be ascribed to the same plume episode. The idea of the plume character of the complex was ехрressed by us relatively long ago based on a superimposed character of the chain of the intrusions over the earlier, collisional Uralian structures. As for the geochemical character (monzogabbro) the dike conforms with one of two standard trends of the Stepninsky complex – monzonite (monzogabbro, monzodiorites, syenites).

Re-evaluation of an early sphenacodontian synapsid from the Lower Permian of England

2019 ◽  
Vol 111 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Frederik SPINDLER
Keyword(s):  
Fossil Record ◽  
Ecological Model ◽  
Lower Permian ◽  
New Taxon ◽  
Early Permian ◽  
Tolerance Range ◽  
Environmental Tolerance ◽  
Unique Character ◽  
Mosaic Distribution

ABSTRACTThe holotypic isolated maxilla of the early sphenacodontian Haptodus grandis from the Cisuralian of England is revisited. A unique character combination includes haptodontine-grade traits like less specialised teeth and a high number of precanines, but at the same time a shortened lacrimal that is separated from the naris, which is strongly diagnostic of Sphenacodontoidea. As the specimen cannot be assigned to any known taxon, the new taxon Hypselohaptodus grandis gen. nov. is proposed. Comparison with other sphenacodontians reveals a mosaic distribution of maxillary features, most significantly regarding the precanine region. Preliminary character histories preclude Hypselohaptodus from Sphenacodontidae, but suggest a haptodontine-grade or basal therapsid position. The latter hypothesis is substantiated by an ecological model of episodic wet phases in an overall trend of aridification throughout the Permian, to explain the rareness of non-sphenacodontid sphenacodontians in the fossil record. Also from the early Permian of England, an isolated dentary has previously been assigned to Ophiacodon, but can be shown to be either a sphenacodontian, possibly affiliated with Hypselohaptodus, or a robust, Stereorhachis-like ophiacodontid. The absence of Ophiacodon in the intramontaneous Permian basis of Europe is explained by a narrow environmental tolerance range requiring limnic connection with lowland basins.

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