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Yangtzitubus semiteres

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Journal Article

SILICIFIED TUBULAR MICROFOSSILS FROM THE UPPER DOUSHANTUO FORMATION (EDIACARAN) IN THE YANGTZE GORGES AREA, SOUTH CHINA

PENGJU LIU, SHUHAI XIAO, CHONGYU YIN, FENG TANG, LINZHI GAO
Published: 01 July 2009
Journal of Paleontology (2009) 83 (4): 630–633.
DOI: https://doi.org/10.1666/08-034R1.1
... petrographic analysis and EDS analysis. The genus name refers to the tubular morphology of the fossil and its occurrence in the Yangtze Gorges area. Yangtzitubus semiteres new genus and species. Branching, semicylindrical tubular microfossils. Branches more or less straight. Hollow tubes...
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Figure 2. 1–3, transmitted photomicrographs of Sinocyclocyclicus guizhouensisXue et al., 1992, emended Liu et al., 2008; 4–9, scanning electron micrographs of Yangtzitubus semiteres new genus and species. 1, longitudinal section showing thin outer wall (arrow). Thin section tjb-3, coordinates 30.9 × 94.4; 2, enlarged view of marked area in 1, showing faintly preserved complete cross-walls (black arrow) and thin outer wall (white arrow); 3, enlarged view of marked area in 2, showing converging cross-walls (arrows); 4, branching specimen with one of the two branches partially preserved or compressed (arrow). IGCAGS-7713-01; 5, enlargement of 4, showing semicylindrical tube and exfoliation (dotted line) of multilaminate outer wall; 6, poorly preserved specimen with branching; note exfoliation of multilaminate outer wall. IGCAGS-7713-08; 7, non-branching, semicylindrical tube with faintly wrinkled surface (arrows). IGCAGS-7713-03; 8, fractured specimen showing smooth inner surface, multilaminate outer wall, and a hint of dichotomy in the upper end (arrows). IGCAGS-7713-04; 9, enlarged view of marked area in 8. Scale bars represent 50 µm.

Figure 2. 1–3 , transmitted photomicrographs of Sinocyclocyclicus guizhou...

Published: 01 July 2009
Figure 2. 1–3 , transmitted photomicrographs of Sinocyclocyclicus guizhouensis Xue et al., 1992 , emended Liu et al., 2008 ; 4–9 , scanning electron micrographs of Yangtzitubus semiteres new genus and species. 1 , longitudinal section showing thin outer wall (arrow). Thin section tjb-3