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    Wyświetlanie 1-4 z 4
    Tytuł:
    New bizarre micro-spiriferid brachiopod from the Early Carboniferous of China
    Autorzy:
    Sun, Y
    Balinski, A.
    Ma, X.
    Zhang, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/22087.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Carboniferous
    verneuiliid brachiopod
    brachiopod
    China
    Muhua Formation
    Verneuiliidae
    Early Carboniferous
    Brachiopoda
    Changshunella yangi
    paleontology
    Opis:
    The verneuiliid brachiopod Changshunella yangi gen. et sp. nov. is described from the Early Carboniferous Muhua Formation of Guizhou, China. This rather unusual form is characterized by having very small shell dimensions (2.6–4 mm in length), a very high flat procline ventral interarea, and by having three prominent plications on both valves that are arranged in opposed folding; the last feature is characteristic for the family Verneuiliidae. We suggest that the family has been derived from an offshoot of the stock that produced the superfamilies Spiriferoidea, Paeckelmanelloidea, and Brachythyridoidea by developing opposed folding and loss of dental plates or dental adminicula as exemplified by Verneuilia and Changshunella gen. nov.
    Źródło:
    Acta Palaeontologica Polonica; 2004, 49, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Early and Middle Frasnian brachiopod faunas and turnover on the South China shelf
    Autorzy:
    Ma, X -P
    Becker, R.T.
    Li, H.
    Sun, Y.-Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/21029.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Early Frasnian
    Middle Frasnian
    Frasnian
    paleontology
    brachiopod fauna
    South China shelf
    Devonian
    Brachiopoda
    Cyrtospirifer
    faunal turnover
    Opis:
    The first appearance of the brachiopod Cyrtospirifer and related forms in the Late Devonian of South China significantly postdates the beginning of the Frasnian and the entry of the group in other parts of the world. Scattered data from different sections suggest that its first entry, associated with the emergence of other plicate spiriferids, such as theodossid and conispiriferid brachiopods, was late in the Middle Frasnian. At the same time, many rhynchonellids disappeared or became extinct locally in South China. This brachiopod faunal overturn near the Palmatolepis punctata–Early Pa. hassi zonal boundary is the most significant event in the Early–Middle Frasnian of South China, characterized by about a 35% loss of existing species and the flourishing of the plicate spiriferids, which was coeval with the end of a major biogeochemical perturbation recently recognized in the Pa. punctata Zone. By contrast, atrypid brachiopods do not seem to show any significant diversity change. The brachiopod faunal change was probably related to a (local?) transgressive event in South China, which also brought new pelagic faunas northwards into some intra−shelf deeper water areas, such as the Shetianqiao area in central Hunan Province. Fifteen brachiopod species are described and illustrated, which include some taxa that are first recorded or recognized in South China, e.g., the spiriferid Pyramidaspirifer, which is now known from both North America and South China. One new species, Desquamatia qiziqiaoensis, is erected.
    Źródło:
    Acta Palaeontologica Polonica; 2006, 51, 4; 789-812
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rugose corals and brachiopods across the Frasnian-Famennian boundary in Central Hunan, South China
    Autorzy:
    Ma, X
    Sun, Y.
    Hao, W.
    Liao, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/21047.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    fossil distribution
    brachiopod fauna
    brahiopod
    Rugosa
    China
    rugose coral
    Ostracoda
    Brachiopoda
    Famennian
    Frasnian
    Devonian
    extinction
    coral
    paleontology
    Hunan
    Opis:
    We present taxonomic revision of rugose corals and brachiopods from several Frasnian–Fammenian (F–F) boundary sections in central Hunan Province, China. Diversity of shallow−water rugose corals gradually increased during the Frasnian, but ended with sudden extinction near the end of Frasnian. Ostracods were abundant during the Frasnian; their extinction coincided with anoxic deposition of the end−Frasnian black shale deposits. The early Famennian ostracod fauna is of low diversity. The brachiopod fauna of the late Frasnian (Palmatolepis rhenana and Pa. linguiformis zones) is dominated by atrypids, small−sized cyrtospiriferids, and the rhynchonellid Hunanotoechia. All atrypids disappeared before the F–F boundary with highest rates of extinction below the boundary (probably low in the Pa. linguiformis Zone). The Frasnian cyrtospiriferid fauna is also of low diversity and dominated by small taxa. All but one of the cyrtospiriferid taxa crossed the F–F boundary. The early Famennian post−extinction recovery brachiopod fauna was the result of rapid radiation of new forms shortly after the terminal Frasnian event. The early Famennian fauna is characterized by diverse cyrtospiriferids, abundant Yunnanellina and productoids. Above the early recovery fauna another fauna was recovered, with brachiopods Hunanospirifer and Yunnanella and is correlated with the late or latest Pa. crepida Zone. Sinalosia rugosa gen. et sp. nov. (Productida) is erected.
    Źródło:
    Acta Palaeontologica Polonica; 2002, 47, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A monospecific assemblage of terebratulide brachiopods in the Upper Cretaceous seep deposits of Omagari, Hokkaido, Japan
    Autorzy:
    Kaim, A.
    Bitner, M.A.
    Jenkins, R.G.
    Hikida, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/22963.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    terebratulid brachiopod
    brachiopod
    Upper Cretaceous
    Cretaceous
    seep deposit
    Omagari
    Hokkaido
    Japan
    Brachiopoda
    Chlidonophoridae
    Eucalathis
    Campanian
    Mesozoic
    Opis:
    The Campanian (Upper Cretaceous) seep carbonate at Omagari (Hokkaido, Japan) yields a monospecific association of the terebratulide brachiopod Eucalathis methanophila Bitner sp. nov. The association is the only occurrence of brachiopods known from the post−Early Cretaceous history of chemosynthesis−based communities. Unlike many earlier rhynchonellide−dominated hydrocarbon seep associations—which disappeared in Aptian times—this association is composed of chlidonophorid terebratulides. It is hypothesised here that large rhynchonellide brachiopods have been outcompeted from chemosynthesis−based associations by large chemosymbiotic bivalves (especially lucinids) and that this seep association containing numerous terebratulide brachiopods originated as a result of immigration from the background fauna settling in a seep that lacked numerous large bivalves but offered some hard substrates for brachiopod attachment. Some living chlidonophorids are known to settle around seep/vent localities or more generally in deep−water hard−substrate settings. We review occurrences of brachiopods in chemosynthesis−based associations and show that brachiopods immigrated repeatedly to seep/vent environments. Eucalathis methanophila Bitner sp. nov. represents the oldest and single Mesozoic record of the genus. The new species is similar in ornamentation to three living species, Indo−Pacific E. murrayi, eastern Atlantic E. tuberata, and Caribbean E. cubensis but differs in having a higher beak and wider loop. Additionally the studied species is nearly twice as large as E. tuberata.
    Źródło:
    Acta Palaeontologica Polonica; 2010, 55, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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