Reticuloceras eoreticulatum Bisat, 1928
Sugerowana cytacja: Gryz, P. 2023. Reticuloceras eoreticulatum Bisat 1928. Ikonoteka (http://ikonoteka.paleo.pan.pl/xwiki/bin/view/Species/Reticuloceras+eoreticulatum)
Diagnoza Test ornamented with closely set, feebly crenulate or merely roughened, transverse striae, radial on the flank, which bend forward into a well marked but moderately broad lingua and with a hyponomic sinus; younger specimens show subordinate spirals, but these become obsolescent later in life. Porównanie R. eoreticulatum and its allies are difficult to distinguish from species in the R. nodosum zone, which have closely similar direction of the striae; the most reliable distinction appears to be the absence of true crenulation in the R. eoreticulatum group, the transverse striae being merely slightly roughened. Autekologia Występowanie geograficzne Great Britain (Lancashire) and Poland (Lublin Coal Basin). Zasięg czasowy Carboniferous; Bashkirian (Namurian - R. todmordenense or R. dubium zone) Materiały muzealne One specimen figured in Korejwo, 1986 Literatura Bisat, W.S. 1928. The Carboniferous goniatite zones of England and their continental equivalents. Congrès de Stratigraphie Carbonifère, Heerlen 1927, C.R.B.: 117-133. Bisat, W.S. & Hudson, R.G.S. 1943. The lower Reticuloceras (R1) goniatite succession in the Namurian of the North of England. Proceedings of the Yorkshire Geological Society 24 (6): 383-440. Korejwo, K. 1986. Biostratigraphy of the Carboniferous deposits of the Świdnik blocks (Lublin Coal Basin). Acta Geologica Polonica 36 (4): 337-346. |
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