High palaeolatitude (Hodh, Mauritania) recovery of graptolite faunas after the Hirnantian (end Ordovician) extinction event [PDF]
Marine shales directly overlying lower Hirnantian (uppermost Ordovician) glacially related sediments in Mauritania (North-West Africa) have produced a rich graptolite fauna spanning the Ordovician-Silurian boundary in an area of high palaeolatitude.
Deynoux, M. +2 more
core
Some encrusted hardgrounds from the Ordovician of Estonia (Baltica)
, 2015 Olev Vinn, Ursula Toom
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Organic matter accumulation under the Middle-Upper Ordovician tectonic transition on the western margin of the North China platform [PDF]
Fengjiao Li +9 more
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Complex Brecciation History Associated with Evaporite and Carbonate Dissolution in the Lower Ordovician Oneota Formation (Prairie du Chien Group) Near Spring Green, Wisconsin [PDF]
, 1997 G. L. Smith
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Buffalo National River Ecosystems - Part II [PDF]
, 1976 The priorities were established for the Buffalo National River Ecosystem Studies through meetings and correspondence with Mr. Roland Wauer and other personnel of the Office of Natural Sciences, Southwest Region of the National Park Service.
Babcock, R. E. +6 more
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Agnostid trilobites from the Upper Ordovician of Sweden and Bomholm, Denmark
, 1989 Per Ahlberg
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Enhanced microbial activity in carbon-rich pillow lavas, Ordovician, Great Britain and Ireland [PDF]
, 2015 John Parnell +5 more
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Two new planktonic crustaceans from the Maquoketa shale (Ordovician) of Illinois [PDF]
, 1944 Justin W. Wells
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Karstification of Ordovician carbonate reservoirs in Huanghua depression and its control factors [PDF]
, 2020 Jinning Zhang +4 more
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