Results 191 to 200 of about 1,784 (228)

A Fossil Urasterellid Asteroid (Asteroidea; Echinodermata) from the Upper Ordovician (Katian) Grant Lake Limestone in Bath County, east-central Kentucky, U.S.A.

Kentucky Academy of Science
The first occurrence of a fossil asteroid from the Upper Ordovician Grant Lake Limestone in Bath County, east-central Kentucky, is reported. Although incompletely exposed, long, slender, columnar arms, disk-shaped adambulacral plates, and limited data on
F. Ettensohn
semanticscholar   +1 more source

Middle Katian trabeculate heliolitid corals from the North Qilian Mountains of Northwest China

Palaeoworld
Yu-Nong Cui, Guang-Xu Wang, Yong Wang, Yu-Chen Zhang, Ren-Bin Zhan   +4 more
openaire   +2 more sources

Late Ordovician (Katian) chitinozoans from northwest Saudi Arabia: Biostratigraphic and paleoenvironmental implications

Revue de Micropaléontologie, 2017
Abstract Investigation of 37 samples from continuously cored intervals of the upper part of the Quwarah Member of the Qasim Formation yielded well-preserved and diverse chitinozoan assemblages. Two biozones previously defined from the North Gondwanan Domain were recognized in the examined cores: the Tanuchitina elongata and Ancyrochitina merga.
Ahmed Al-Shawareb, Merrell Miller, Marco Vecoli   +2 more
openaire   +1 more source

A review of the Late Ordovician (Katian) Richmondian Invasion of eastern Laurentia

Palaeogeography, Palaeoclimatology, Palaeoecology, 2023
openaire   +1 more source

PALEOECOLOGY AND STRATIGRAPHY OF AN UPPER ORDOVICIAN (KATIAN) HARDGROUND

Geological Society of America Abstracts with Programs, 2016
Timothy Paton, Carlton E. Brett, Dylan J. Ward   +2 more
openaire   +1 more source

Astronomically paced Katian (late Ordovician) sea-level changes: A record from Northern Yangtze Block

Global and Planetary Change
Chuanzheng Ren, Qiang Fang, Huaichun Wu, Wentao Huang, X. Jing, Jinlin Liu, Ziyu Wang, C. Gai, M. Shi, Tianshui Yang, Haiyan Li   +10 more
exaly   +2 more sources

A world-class source rock in southern China formed during the periods from Katian to Rhuddanian: biostratigraphic distribution, depositional model and shale gas potential

Gondwana Research, 2023
H. Nie, Pei Li, Qingru Chen, Zhijun Jin, Quanyou Liu, Wei Dang, Qian Chen, Jianghui Ding, Changbo Zhai   +8 more
semanticscholar   +1 more source

A REVIEW OF THE LATE ORDOVICIAN (KATIAN) RICHMONDIAN INVASION OF EASTERN LAURENTIA : WHAT I’VE LEARNED IN THE 25 YEARS SINCE STIG BERGSTRÖM FIRST INTRODUCED ME TO THESE ROCKS

Geological Society of America Abstracts with Programs, 2023
A. Stigall
semanticscholar   +1 more source

A new late Katian (Late Ordovician) trilobite association from Zhenxiong, northeastern Yunnan, Southwest China and its palaeoecological implications

Palaeoworld, 2023
Jianbo Liu
exaly  

Did a Katian large igneous province trigger the Late Ordovician glaciation?

Palaeogeography, Palaeoclimatology, Palaeoecology, 2010
Lefebvre, Vincent, Servais, Thomas, François, Louis, Averbuch, Olivier   +3 more
openaire   +1 more source