A new Changhsingian (Late Permian) brachiopod fauna from the Zhongzhai section (South China) Part 3: Productida

2015 ◽  
Vol 39 (3) ◽  
pp. 295-314 ◽  
Author(s):  
Yang Zhang ◽  
Wei-Hong He ◽  
G.R. Shi ◽  
Ke-Xin Zhang ◽  
Hui-Ting Wu
2008 ◽  
Vol 82 (5) ◽  
pp. 924-937 ◽  
Author(s):  
Shu-Zhong Shen ◽  
Yi-Chun Zhang

The uppermost 5–15 m of the Douling Formation in the southern Hunan area, South China, yields a diverse fauna comprised of ammonoids, bivalves, and brachiopods. The brachiopods reported in this paper consist of 51 species in 34 genera and are dominated by the Lopingian (Late Permian) species associated with a few species persisting from the underlying Maokouan (Late Guadalupian). This fauna is of earliest Wuchiapingian in age as precisely constrained by the associated conodontClarkina postbitteri postbitteriand the Guadalupian-type ammonoid fauna of theRoadoceras-DoulingocerasZone in the brachiopod horizon. The discovery of the Lopingian species-dominated brachiopod fauna in the earliest Wuchiapingian in southern Hunan suggests a much less pronounced effect of the pre-Lopingian crisis (end-Guadalupian mass extinction) than the end-Changhsingian mass extinction in terms of brachiopods, a contemporaneous onset of the Lopingian recovery/radiation during the pre-Lopingian crisis period, and taxonomic selectivity of the pre-Lopingian crisis in terms of different fossil groups. New taxa areEchinauris doulingensisn. sp.,Pararigbyella quadrilobatan. gen. and n. sp. andP. doulingensisn. gen. and n. sp.


2019 ◽  
Vol 157 (4) ◽  
pp. 677-689 ◽  
Author(s):  
Binsong Zheng ◽  
Chuanlong Mou ◽  
Renjie Zhou ◽  
Xiuping Wang ◽  
Zhaohui Xiao ◽  
...  

AbstractPermian–Triassic boundary (PTB) volcanic ash beds are widely distributed in South China and were proposed to have a connection with the PTB mass extinction and the assemblage of Pangea. However, their source and tectonic affinity have been highly debated. We present zircon U–Pb ages, trace-element and Hf isotopic data on three new-found PTB volcanic ash beds in the western Hubei area, South China. Laser ablation inductively coupled plasma mass spectrometry U–Pb dating of zircons yields ages of 252.2 ± 3.6 Ma, 251.6 ± 4.9 Ma and 250.4 ± 2.4 Ma for these three volcanic ash beds. Zircons of age c. 240–270 Ma zircons have negative εHf(t) values (–18.17 to –3.91) and Mesoproterozoic–Palaeoproterozoic two-stage Hf model ages (THf2) (1.33–2.23 Ga). Integrated with other PTB ash beds in South China, zircon trace-element signatures and Hf isotopes indicate that they were likely sourced from intermediate to felsic volcanic centres along the Simao–Indochina convergent continental margin. The Qinling convergent continental margin might be another possible source but needs further investigation. Our data support the model that strong convergent margin volcanism took place around South China during late Permian – Early Triassic time, especially in the Simao–Indochina active continental margin and possibly the Qinling active continental margin. These volcanisms overlap temporally with the PTB biocrisis triggered by the Siberian Large Igneous Province. In addition, our data argue that the South China Craton and the Simao–Indochina block had not been amalgamated with the main body of Pangea by late Permian – Early Triassic time.


Lethaia ◽  
1994 ◽  
Vol 27 (1) ◽  
pp. 19-28 ◽  
Author(s):  
RONG JIA-YU ◽  
DAVID A.T. HARPER ◽  
ZHAN REN-BIN ◽  
LI RONG-YU
Keyword(s):  

2009 ◽  
Vol 33 (2) ◽  
pp. 163-183 ◽  
Author(s):  
Zhong-Qiang Chen ◽  
G. R. Shi ◽  
Yongqun Gao ◽  
Jinnan Tong ◽  
Fengqing Yang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document