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A single perfectly preserved colony of a tabulate coral assigned tentatively to the genus Yavorskia Fomitchev, 1931, collected from Upper Famennian beds (Palmatolepis expansa conodont Zone) in a trench located north of the Kowala Quarry (Holy Cross Mts., central Poland) is here described as a new species, ?Y. paszkowskii sp. nov. It differs from other representatives of the genus in the lack of dissepimental structures and in smaller corallite diameters, and may therefore represent the ancestral taxon of this typically early Carboniferous genus. Yavorskia tabulates were apparently migrating eastwards along the southern margin of Laurussia and farther east and north towards Siberia, as they appear in the Famennian in Europe and in the early Carboniferous in the Altaides. Such a conclusion is consistent with previous observations on Early.Middle Devonian pleurodictyform tabulate distribution.
Tabulate corals are sometimes associated with other organisms occurring within their skeletons. These tabulate endobionts are common in Lower Palaeozoic (Ordovician and Silurian) and Devonian strata, but until now they have not been recognized in strata younger than early Frasnian. Here we report ?Chaetosalpinx sp. occurring within the skeletons of the tabulate coral Yavorskia sp. (Favositida, Cleistoporidae) from the latest Famennian ("Strunian") in the Etroeungt area (Northern France). It can be stated that these endobionts survived the Frasnian-Famennian boundary crisis and recovered in the Late Famennian.
Content available remote New tabulature corals from the Tournaisian of the Cracow area, Poland
The paper presents the results of investigation of tabulate corals from the Lower Carboniferous (Upper Tournaisian, Gnathodus cuneiformis Zone) from several exposures in the Dębnik Anticline (Silesia-Cracow Upland, sothern Poland). Two taxa representing the Favositida, Roemeripora nowinskii sp. nov. and Roemeripora sp., and one species representing the Syringoporida, Pleurosiphonella cf. virginica (NELSON), are described. The presence of Michelinia tenuisepta (PHILLIPS) is noted. The genus Pleurosiphonella TCHUDINOVA is recognised in the Carboniferous of Europe for the first time.
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