Lingulate brachiopods across the Kačák Event and Eifelian-Givetian boundary in the Barrandian area, Czech Republic (original) (raw)
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Bulletin of Geosciences, 2009
Lingulate brachiopod fauna of the Chýnice Limestone (Zlíchov Formation, Emsian; Czech Republic) were examined. Ten species have been observed, of which Acrosaccus vertex, Schizotreta vaneki, Havlicekion frydai, and Opsiconidion coralinus are described here as new taxa. Shell microornaments of several of the taxa were examined and it indicated that some show prominent changes during shell growth. Uniformity of microornaments in particular species is evidenced. Both findings suggest that microornaments can be used as a significant feature in determination of separate species. Composition of the fauna indicates a close relationship to the Eifelian lingulate fauna of the Barrandian area.
Lingulate brachiopods from the Acanthopyge Limestone (Eifelian) of the Barrandian, Czech Republic
Bulletin of Geosciences, 2008
The lingulate brachiopod fauna of the mid-Devonian Acanthopyge Limestone, Choteč Formation of the Prague Basin, Czech Republic comprises seven species, of which Kosagitella pulsatilla sp. nov., Microbolus minimus gen. et sp. nov., Chynithele amoena sp. nov., and Opatrilkiella kobyla sp. nov. are described as new. Shell microornaments of all taxa are examined. The pitting on the mature shell of Kosagitella, and diverse types of pitting on discinid shells have been observed, including the imprints of suggested siliceous tablets on the first-formed shells of Acrosaccus and Opatrilkiella.
Lingulate brachiopods from the Suchomasty Limestone (upper Emsian) of the Barrandian, Czech Republic
Bulletin of Geosciences, 2015
Lingulate brachiopod fauna from Suchomasty Limestone (upper Emsian, P. serotinus Zone) are examined. Eleven species were observed, of which Kosagittella robusta, Chynithele intermedia, Lochkothele rugellata and Praeohlertella lukesi are described as new taxa. Associated Opatrilkiella kobyla, Havlicekion frydai and Opsiconidion coralinus were described previously from the Chýnice Limestone of the Barrandian area. Four taxa are left in open nomenclature including further evidence of the siphonotretid Orbaspina in the upper Emsian. The composition of the fauna shows distinct difference to other Emsian and Eifelian lingulate brachiopod faunas of the Koněprusy area of the Barrandian.
Bulletin of Geosciences, 2008
A new lingulate brachiopod assemblage has been found in the early Middle Cambrian Týřovice Greywackes of the Skryje-Týřovice area (Central Bohemia, Czech Republic). A new species, Lingulella agaue sp. n., a minute indeterminable lingulid, a ceratretid Almohadella braunae Streng, 1999, and an acrotretid Treptotreta? sp. have been ascertained in the fauna. Four species in one bed is the most diverse lingulate fauna in the area. Associated faunas indicate a shallow marine nearshore environment with a simple trophic structure dominated by an eoorthid Pompeckium kuthani (Pompeckj, 1896), and a few other epibenthic low suspension feeders, as well as uncommon scavengers and browsers. The presence of Almohadella braunae Streng, 1999 is the first incidence of a ceratretid within territory of the Perunica terrane.
Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica
Lingulate brachiopods are described from a lithic sandstone referred to the upper part of the Třenice Formation. Loose blocks were sampled from a dump of abandoned Gabriela Mine in Krušná Hora Hill near Beroun, Central Bohemia. Apart of the Acrotreta aff. grandis Klouček, 1919, genera Teneobolus, Rosobolus, Broeggeria, Rowellella and Siphonobolus are distinguished. Comments to their ontogeny, affinity, stratigraphical and spatial occurrences and taphonomy are discussed.
Fossil Imprint
The dark pelbiodetrital limestone beds of the ‘upper dark interval’ in the Koněprusy area, Central Bohemia, the Czech Republic, the assumed manifestation of the Kačák Event in this area, yielded a moderately diverse faunule of rhynchonelliform brachiopods and trilobites. In total, 15 species have been recognized (13 brachiopods and 2 trilobites), but the majority of them are only tentatively determined to generic level due to fragmentation, rarity or poor preservation. Brachiopod genera Leptaenopyxis, Protodouvillina, Douvillinella, Holynetes, Poloniproductus, Iridistrophia, Mystrophora, Pentamerella, Quasidavidsonia, Carinatina, Mimatrypa, Leptathyris, Eoreticularia and a single trilobite Astycoryphe were determined. The mode of preservation indicates transport of skeletal bioclasts from shallower parts of the basin and their fragmentation in debris flows together with fragments of terrestrial plants, crinoid detritus and numerous pelagic fossils, especially the dacryoconarid Nowak...
Middle Miocene (Badenian) brachiopods from the Roztocze Hills, south-eastern Poland
Acta Geologica Polonica, 1990
The. brachioPQd assembtage from the Middle Miocene (Badenian) shallow water deposits of the Roztocze Hills (LubJin Upland, south-eastem Poland) comprises eight species belonging to six genera. Four of them, i.e. Ancistrocrania abnormis (DEFRANCE), Cryptopora sp. A. Cryptopora sp. B. and Platidia cf. anomioides (SCACCHI & PHILlPPI) are very rare, while the species Megathiris detruncata (GMELIN), Argyrotheca cuneata (RIsso), A. cordata (RISSO) and Megerlia truncata (LINNAEUS) are very abundant what allows the range of morphological variability of those species to be recognized. Three ~es: Ancistrocrania ab~rmis. Platidia cf. anomioides and Argyrotheca cuneata are reported for the first time from Poland. The brachiopod percentages in particular samples show considerable differences although the samples come from the shallow water deposits originating in similar cOnditions and during a narrow span of time. Thus, the brachiopod assemblage structure seems to be controlled not only by depth but by such factors as particular substrate and habitat availability as well. The brachiopod fauna from the Roztocze Hills displays the resemblance to the Miocene one from the Mediterranean region as well as to the Recent one living in the Mediterranean Sea. BRACHIOPODS FROM TIlE ROZTOCZE HILLS 131 but the brachiopod frequency in the samples,is highly variable (from 4 to 2948 specimens per sample). The total number of collected and identified specimens is 13 869, but there are additional specimens, the smallest ones,. which cannot be identified, and. few hundreds fragments of various 'size. Several sections at W~glinek, W~glin, Lych6w, Radwan6wka, Zdziechowice and Modliborzyce (Text-fig. lA) have been sampled and yielded numerous brachiopods. W~nek At W~glinek (Text-fig. IB) the brachiopods were mostly collected from internal sediments (extremely fossiliferous) filling various cavities and depressions in the red-algal vermetid reefs (they are the part of the reef assemblage of PISERA 1985) (samples W6-1 to W6-19, W6-22, W6-23). Also red-algal marls rich in bryozoan fragments, surrounding and partly covering the algal-vermetid reefs towards the south, yielded numerous brachiopods (samples W6-20, W6-21). In the vicinity of W~glin (Text-fig. IB) several sections. with various lithologies yielded brachiopods. The richest and most diversified brachiopod fauna comes from the calcareous marls rich ih red~algal and bryozoan fragments (se<;tion 5, layer 2 of BIELECKA 1967; see also SZCZECHURA & PISERA 1986) (sample W-l). Less numerous and diversified fauna of brachiopods has been found in the strongly calcareous clay rich in molluscs (the outcrop described by MACIOSZCZYK 1988) (sample W-2) and in the calcareous marls with red-algae and molluscs (samples W-3 to W-i5), and in extremely fossiliferous marls (rich in molluscs) containing reef rock fragments (?forereef deposits) (samples W3-1 to W3-3). l..ychO", At I..ychow (Text-fig. IB) thebrachiopods were collected from three different sites and lithologies, i.e. from quartz sands with glauconite and poor fauna of bivalves and red-algal detritus (sample L-3), strongly fossiliferous marls interpreted as the kelp assemblage (for more detailed analysis see HOFFMAN & al. 1978) (samples L-l, L-2) and marly red-algal limestones (samples L-4, L-5). RadwaOOwka AtRadwanowka (Text-fig. IC) the brachiopods were collected. from the very fossiliferous (rich molluscan fauna) marls covering the reef body and filling depressions in it. They represent the epi-reef assemblage of PISERA (1985) (samples R-l to R-6). At Zdziechowice (Text-fig. IB) the brachiop,?ds were collected both from the deposits infilling cavities and depressions in the oyster bioherm (see BIELECKA 1967) (samples Z-l, Z-2) and from the calcareous marls (reef talus) surrounding the •bioherm (sample Z-3). Mod6borzyce At Modliborzyce (Text-fig. lA) one sample from the marly red-algal limestones has been taken and yielded brachiopods. .
Acta geologica Polonica
The . brachioPQd assembtage from the Middle Miocene (Badenian) shallow water deposits of the Roztocze Hills (LubJin Upland, south-eastem Poland) comprises eight species belonging to six genera. Four of them, i.e. Ancistrocrania abnormis (DEFRANCE), Cryptopora sp. A. Cryptopora sp. B. and Platidia cf. anomioides (SCACCHI & PHILlPPI) are very rare, while the species Megathiris detruncata (GMELIN), Argyrotheca cuneata (RIsso), A. cordata (RISSO) and Megerlia truncata (LINNAEUS) are very abundant what allows the range of morphological variability of those species to be recognized. Three ~es: Ancistrocrania ab~rmis. Platidia cf. anomioides and Argyrotheca cuneata are reported for the first time from Poland. The brachiopod percentages in particular samples show considerable differences although the samples come from the shallow water deposits originating in similar cOnditions and during a narrow span of time. Thus, the brachiopod assemblage structure seems to be controlled not only by depth but by such factors as particular substrate and habitat availability as well. The brachiopod fauna from the Roztocze Hills displays the resemblance to the Miocene one from the Mediterranean region as well as to the Recent one living in the Mediterranean Sea.