...Figure 7. (a) Paryphella transversa Liao, 1984 from Bed 26 of the lower Yinkeng Formation (latest Changhsingian), Meishan section (Quarry A) of Zhejiang, South China, UWA133456, ventral view of an incomplete ventral valve with ears broken. (b) Paryphella nasuta Liao, 1984 from Bed 26...

... defined as the global stratotype section and point (GSSP) for the PTB ( Yin et al., 2001 ) and the base of the Changhsingian Stage ( Fig. 1C ; Jin et al., 2006 ). The marine sequence is ascendingly composed of the Late Permian Lungtan Formation, the Changhsing Formation, and the Early Triassic Yinkeng...

...Figure 2. Temporal pattern of mono-aromatic des -A-oleananes (MADAO) and phenol indices across the Changxing and Yinkeng Formations at Meishan, southeastern China. (A) Ratio of MADAO to n -alkanes. (B) Ratio of phenols to n -alka(e)nes. Note the different scale for the upper part of the column...

... ; Jin et al., 2006 ). The Late Permian Changhsing Formation in this section is composed of micritic limestone and the overlying Yinkeng Formation consists of parallel-laminated calcareous mudstone with intercalations of thin-bedded limestone ( Fig. 2 ). These rocks were deposited in middle-upper slope...

... geologic model, from south to north, showing major ore-bearing strata [Triassic Yinkeng formation, the light purple in (c) and Devonian Wutong formation, silver gray in (d)] and the intrusive. ...

... with numerous clay ash layers of the Yinkeng Formation. Integration of lithofacies and paleoecologic features shows that the Permian−Triassic succession represents a deepening-up cycle with depositional settings ranging from upper ramp to lower ramp or offshore shelf ( Chen et al., 2007 , 2015 ; S. Tian et al...

... Devonian; C 1 , Lower Carboniferous (Mississippian); C 2 , Upper Carboniferous (Pennsylvanian); P 1 , Lower Permian; P 2 , Middle Permian; P 3 , Upper Permian; T 1 y, Lower Triassic Yinkeng Formation; T 1 h, Lower Triassic Helongshan Formation; T 1 n, Lower Triassic Nanlinghu Formation; T 2 , Middle...

..., South China Block) ( Fig. 1 ). Here, a nearly complete sedimentary succession is exposed, ranging from the upper part of the Yinkeng Formation (Early Triassic) to the Dongmaanshan Formation (early Middle Triassic). For the Early Triassic, three formations can be recognized in ascending order...

...) from the Yinkeng Formation, Meishan section, Changxing, Zhejiang, China, and to C. griesbachi of Ling (1988) from the Jinjiling Formation, Jinjiling, Zhen'an, Shanxi, China, in outline, size, hinge, beak, conspicuous and narrow byssal notch, and weak concentric lines. Pseudomonotis aff...

... 2 l—Longtan Formation (Guadalupian), P 3 d—Dalong Formation of (Ludlow-Pridoli), T 1 y—Yinkeng Formation (Lower Triassic), T 1 h—Helongshan Formation (Lower Triassic), T 1 b—Biandanshan Formation (Lower Triassic), T 2 y—Yueshan Formation (Middle Triassic), Cz—Cenozoic strata. ...

... ). These earlier studies of the Chaohu-area Lower Triassic provide the basis for the exceptionally high-resolution geochronological framework used in the present study. The West Pingdingshan section contains the Yinkeng, Helongshan, and basal Nanlinghu Formations, whereas the North Majiashan and South Majiashan...