Development of bryozoaus (bryozoa type) on the border of devonian carboniferous in western part of the altai sayanskaya folded area

The features of pearlside development in Late Devonian and Early Carboniferous time in western part of the Altai-Sayanskaya folded area have been revealed. The position of the lower border of carbon in the region is paleontologicaly proven by pearlsides taking into account the data on conodonts and brachiopod

New Tournaisian bryozoans (Mississippian, Lower Carboniferous) from the Kurgan Region, Russia

© 2015, Pleiades Publishing, Ltd. New bryozoan species, Nikiforovella tobolensis sp. nov., Primorella variata sp. nov., and Sulcoretepora regularis sp. nov. are described from the Upper Tournaisian of the Kurgan Region (southwestern West Siberian Plain). These taxa belong to genera, which are widespread in the Lower Carboniferous of Eurasia and North America

New data on the Tournaisian bryozoans (Lower Carboniferous) from Azerbaijan and Armenia

© 2016, Pleiades Publishing, Ltd.Three new bryozoan species of the order Trepostomata are described from the Tournaisian sedimentary rocks of Azerbaijan (Nakhichevan) and Armenia: Nikiforopora arpaensis sp. nov., Tabuliporella nakhichevanica sp. nov., and Anisotrypa kjarkiensis sp. nov. The sequential change in the bryozoan associations in southern Transcaucasia during the Tournaisian age is considered. Some taxa are shown to belong also to the Early Carboniferous bryozoan assemblages of the shelf seas of the Paleotethys

Palaeoecology of Famennian-Tournaisian (Late Devonian-Early Carboniferous) bryozoans from central and southern regions of Russia

© 2017, Senckenberg Gesellschaft für Naturforschung and Springer-Verlag GmbH Germany. The palaeoecology of Famennian-Tournaisian (Late Devonian-Early Carboniferous) bryozoans from central and southern regions of Russia is analysed. Famennian-Tournaisian bryozoans associations of the Altai-Sayan Folded Area and the south-western region of the West-Siberian plate was a shallow-middle shelf according to our own and literature data. Robust branching-fenestrate-bilaminar bryozoan associations are found in locations of warm water, transitional low-high water energy, normal salinity and changing sedimentation rate. Bryozoan associations from South Urals and the central part of the Russian plate are characterised by a low number of species and specimens. Encrusting unilaminar and delicate branching growth habits are dominate in the Russian Plate and indicate an environmental setting in close proximity to strandline

The First Data on Bryozoans from the Lyaiol Formation (Upper Devonian, Upper Frasnian) in South Timan

© 2018, Pleiades Publishing, Ltd. Abstract: For the first time the systematic composition of the bryozoan assemblage from the Lyaiol Formation (Upper Frasnian, Upper Devonian) in the Ukhta region of the Timan–Pechora province is described. The assemblage consists of eight species, including one new species, Neotrematopora lyaoilensis sp. nov., and seven species left in open nomenclature. The bryozoans are represented by cosmopolitan genera common in the Frasnian of Eurasia and North America

An early Tournaisian (Mississippian) bryozoan fauna from the Moravian Karst (Rhenohercynian Zone, Czech Republic)

© 2017 Bryozoans are described from the lower Tournaisian of the Moravo-Silesian Zone (part of the Rhenohercynian Zone) of the Czech Republic for the first time. The studied fauna displays poor diversity and small size; it is represented by encrusting unilaminar and delicate branching growth habits. One species, Eridopora moravica, is new, and three other species are left in open nomenclature: Nikiforovella sp., Saffordotaxis sp., and ?Streblotrypella sp. Bryozoans found within calciturbidites of the Siphonodella sulcata and Siphonodella quadruplicata conodont zones inhabited originally the littoral zone at the southern margin of Laurussia. They indicate links between the eastern and western parts of the northern Palaeotethyan Siberian and Panthalassan realms

Famennian (Upper Devonian) bryozoans from borehole Velbert 4, Rhenish Massif (Germany)

Eleven bryozoan species are described from the Velbert Formation (Famennian, westernmost Rhenish Massif) in Germany, including two new monospecific genera: Velbertopora geometrica Gen. Et Sp. Nov. and Rhenishella hirsuta Gen. Et Sp. Nov. The following additional species were identified in the assemblage: Nikiforovella cavernosa (Nekhoroshev, 1932), Cyphotrypa explorata Troizkaya 1968, Clausotrypa ramosa (oweN, 1973), Pamirella cf. minor (Ulrich, 1890), and Penniretepora cf. volgensis shishova, 1959. Four species were identified only to genus level: Fistulipora sp., Leptotrypella sp., Dyscritella sp., and Hinaclema sp. The bryozoan assemblage of the Velbert Formation shows palaeogeographical connections with uppermost Famennian assemblages from Kazakhstan, Russia, Azerbaijan, Mongolia and China. © 2014 E

Famennian (Upper Devonian) bryozoans from borehole Velbert 4, Rhenish Massif (Germany)

Eleven bryozoan species are described from the Velbert Formation (Famennian, westernmost Rhenish Massif) in Germany, including two new monospecific genera: Velbertopora geometrica Gen. Et Sp. Nov. and Rhenishella hirsuta Gen. Et Sp. Nov. The following additional species were identified in the assemblage: Nikiforovella cavernosa (Nekhoroshev, 1932), Cyphotrypa explorata Troizkaya 1968, Clausotrypa ramosa (oweN, 1973), Pamirella cf. minor (Ulrich, 1890), and Penniretepora cf. volgensis shishova, 1959. Four species were identified only to genus level: Fistulipora sp., Leptotrypella sp., Dyscritella sp., and Hinaclema sp. The bryozoan assemblage of the Velbert Formation shows palaeogeographical connections with uppermost Famennian assemblages from Kazakhstan, Russia, Azerbaijan, Mongolia and China. © 2014 E

Palaeobiogeography and diversification of Tournaisian-Viséan bryozoans (lower-middle Mississippian, Carboniferous) from Eurasia

© 2014 Elsevier B.V. The Mississippian represented the last diversification event of bryozoans in the Palaeozoic which affected all taxonomic levels. Within the borders of modern Eurasia Tournaisian-Viséan bryozoans are known from 24 areas, with a total of 878 species in 180 genera. Palaeobiogeographical analysis is here made according to the stages and substages of the Tournaisian and Viséan. Six characteristic species were identified for the lower Tournaisian which are distributed in more than one region of the continent, and for the upper Tournaisian there are two such species. Eleven species occur in the narrow stratigraphic interval of the lower Viséan that display a wide geographic distribution within Eurasia, in the upper Viséan there are 14 such species. Analysis of the generic composition showed the closest similarity between Tournaisian bryozoans of Kazakhstan, the Kuznetsk Basin and Eastern Transbaikalia. Significant similarity in the generic composition of Germany, Britain, Ireland and France is observed during the Viséan. Two centres of radiation bryozoans were identified: «Eastern» and «Western»

A bryozoan fauna from the Mississippian (Tournaisian and Viséan) of Belgium

© 2017 Elsevier Masson SASEleven bryozoan species are described from the Mississippian of southern Belgium, including one new species, Atactotoechus vaulxensis, and one species left in open nomenclature (Stenophragmidium sp.). From this fauna, four species are restricted to the Tournaisian stage, and seven occur in the Viséan. The fauna is mainly small-sized, represented by branched ramose, encrusting and reticulate growth forms. Bryozoans in the Mississippian of southern Belgium preferred deeper, clay-rich environments. The identified bryozoan species are mainly distributed within the European basin, with some similarities with the Mississippian faunas of Siberia and Kazakhstan