Results 181 to 190 of about 1,784 (228)

First coral from the Katian (Upper Ordovician) dolostones of the western Yangtze Platform in South China

Alcheringa
Katian (Late Ordovician) corals from the Yangtze Platform of South China have only been documented from limestone deposits of the interior region. Here, we describe the first coral (Agetolitoides sp.) from dolostones of the uppermost Taching Formation ...
Guang-Xu Wang, Xin Wei
semanticscholar   +1 more source

Katian prelude to the Hirnantian (Late Ordovician) mass extinction: a Baltic perspective

Geological Journal, 2011
AbstractThe diversity of several groups of Late Ordovician fossils in the Baltic is discussed and corresponding curves are presented. The curves are correlated with the latest δ13C trend and probable sea surface temperatures of the equatorial ocean in order to link biodiversity and environmental changes.
Dimitri Kaljo, Linda Hints, Olle Hints, Peep Männik, Tõnu Martma, Jaak Nõlvak   +5 more
openaire   +1 more source

Rare signs of predation on rhynchonellate brachiopods in the early Katian (Late Ordovician) of northern Estonia

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen
Olev Vinn, Mare Isakar, Magdy El Hedeny, Mansour I. Almansour, Saleh Al Farraj   +4 more
openaire   +2 more sources

Insights into reef evolution: the first sphinctozoan‐dominated reef facies from the lower Katian (Upper Ordovician) of the Tarim Basin, China

Papers in Palaeontology
During the transition from the Middle to Late Ordovician, the reef community shifted significantly from microbial dominated to metazoan (stromatoporoids, bryozoans and corals) and algal dominated.
Yangge Zhu, Lijing Liu, Yasheng Wu, Lianqi Jia   +3 more
semanticscholar   +1 more source

Late Ordovician (Katian) linguliform microbrachiopods from north‐eastern Yunnan, South China

Papers in Palaeontology, 2021
AbstractLinguliform brachiopods are a minor but distinctive component of the Palaeozoic Evolutionary Fauna. However, there is no formal research on Katian (Late Ordovician) linguliform microbrachiopods in South China. Fossils from the ‘Pagoda’, ‘Linhsiang’ and Daduhe formations, Wanhe section of Yunnan Province, South China, provide a unique ...
Di Chen, Bing Huang, Wen‐Jie Li, Rong‐Yu Li, Jia‐Yu Rong   +4 more
openaire   +1 more source

Upper Ordovician (Sandbian–Katian) graptolite and conodont zonation in the Yangtze region, China

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2010
ABSTRACTThe graptolite and conodont biostratigraphy of the latest Darriwilian, Sandbian and early and middle Katian succession on the Yangtze Platform is reassessed based on numerous new fossil collections and previously published data. At least at some localities, the lowermost Miaopo Formation is of pre-Nemagraptus gracilis Zone age (uppermost ...
Chen Xu, Stig M. Bergström, Zhang Yuandong, Dan Goldman, Chen Qing   +4 more
openaire   +1 more source

Traces of missing encrusters: borings reveal sclerobiont taphonomy in the Upper Ordovician (Katian) of the Cincinnati region, USA

Historical Biology
The abundant shells and hardgrounds in the Cincinnatian Group (Upper Ordovician, Katian) of the upper midwestern United States were commonly encrusted and bored by a variety of organisms.
M. Wilson, C. Buttler, O. Vinn
semanticscholar   +1 more source

Upper Katian Cyclostratigraphy of the Vauréal Formation, Anticosti Island (Gulf of St. Lawrence, Canada)

2018
Anticosti Island (Gulf of the St. Lawrence, Canada) has some of the most complete, thickest and most richly fossiliferous carbonate successions in the world containing the Ordovician-Silurian boundary. This study focuses on the cyclostratigraphy of the upper Katian Vauréal Formation.
Sinnesael, Matthias, Mauviel, Alain, Desrochers, André, McLaughlin, Patrick, De Weirdt, Julie, Claeys, Philippe, Vandenbroucke, Thijs   +6 more
openaire   +3 more sources

Katian oncoids of the lower Ordovician Lianglitage Formation in the Tarim Basin, Northwest China

Carbonates and Evaporites, 2019
This study examines oncoids and their diagenetic structures in the lower Ordovician (Katian Stage) Lianglitage Formation in the Tarim Basin, Northwest China. Oncoid morphologies range from spherical and sub-spherical to irregular. Individual oncoids generally range from 4 to 10 mm in diameter, with an average of 8 mm and a maximum of 18 mm.
Shi Pingzhou, Tang Hongming, Wang Zhengyu, Sha Xuguang   +3 more
openaire   +1 more source

Productivity or preservation? The factors controlling the organic matter accumulation in the late Katian through Hirnantian Wufeng organic-rich shale, South China

Marine and Petroleum Geology, 2019
The Wufeng organic-rich shale is widespread in the Upper Yangtze platform, and it is one of the most advantageous shale gas producers in China. Its deposition commenced with the onset of the Boda warming event in the late Katian and terminated at the ...
Yangbo Lu, Shu Jiang, Yongchao Lu, Shang Xu, Y. Shu, Yuxuan Wang   +5 more
semanticscholar   +1 more source