Search for a meteoritic component at the Beaverhead impact structure, Montana [PDF]
The Beaverhead impact structure, in southwestern Montana, was identified recently by the presence of shatter cones and impactites in outcrops of Proterozoic sandstones of the Belt Supergroup. The cones occur over an area greater than 100 sq km.
Kay, Robert W., Lee, Pascal
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Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions. [PDF]
Proc Natl Acad Sci U S A, 2019 Rasmussen CMØ +3 more
europepmc +1 more source
A common arthropod from the Late Ordovician Big Hill Lagerstätte (Michigan) reveals an unexpected ecological diversity within Chasmataspidida. [PDF]
BMC Evol Biol, 2019 Lamsdell JC, Gunderson GO, Meyer RC.
europepmc +1 more source
Tempo of the Late Ordovician mass extinction controlled by the rate of climate change. [PDF]
Sci AdvZhang Z +10 more
europepmc +1 more source
Late Ordovician eurypterid preserves oldest euchelicerate musculature in pyrite. [PDF]
Biol LettBicknell RDC, Gaines RR, Hopkins MJ.
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Mercury Spikes Indicate a Volcanic Trigger for the Late Ordovician Mass Extinction Event: An Example from a Deep Shelf of the Peri-Baltic Region. [PDF]
Sci Rep, 2019 Smolarek-Lach J +3 more
europepmc +1 more source
Late Ordovician Extinction in the Graptoloidea
, 1991 M J Melchin, C E Mitchell
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Identifying the most surprising victims of mass extinction events: an example using Late Ordovician brachiopods. [PDF]
Biol Lett, 2017 Finnegan S, Rasmussen CMØ, Harper DAT.
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The SPICE carbon isotope excursion in Siberia: A combined study of the upper Middle Cambrianlowermost Ordovician Kulyumbe River section, northwestern Siberian Platform [PDF]
, 2008 Kouchinsky, Artem
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Facies Patterns and Conodont Biogeography in Arctic Alaska and the Canadian Arctic Islands: Evidence against Juxtaposition of These Areas during Early Paleozoic Time [PDF]
, 2000 Bradley, D. C. +3 more
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