Welsh Borderland Geological Framework Project : the geology and applied geological issues of the region around Knighton, Powys : a scoping study [PDF]
This presents a review of the extent of geological knowledge and available analogue and digital data for the region around Knighton, Powys (Figure 1). Although a key consideration underlying this report is the lack of modern geological mapping for the ...
Kendall, R., Thomas, C.W.
core
Rhombot and the dawn of paleobionics. [PDF]
Ausich WI.
europepmc +1 more source
Upper Ordovician cryptostomatid bryozoans and microfossils from the Don Braulio Formation, Eastern Precordillera, Argentina [PDF]
En la clásica sección de la Quebrada de Don Braulio, en la Precordillera Oriental de la Provincia de San Juan, afora la Formación Don Braulio de edad hirnantiana.
Beresi, Matilde Sylvia +3 more
core
Geochemical Changes in the Late Ordovician to Early Silurian Interval in the Northern Margin of the Upper Yangtze Platform, Southern China: Implications for Hydrothermal Influences and Paleocean Redox Circumstances. [PDF]
Fu X +5 more
europepmc +1 more source
Shared patterns in body size declines among crinoids during the Palaeozoic extinction events. [PDF]
Salamon MA +4 more
europepmc +1 more source
Selectivity and the effect of mass extinctions on disparity and functional ecology. [PDF]
Cole SR, Hopkins MJ.
europepmc +1 more source
An Upper Ordovician (Katian) trilobite fauna from the Lower Ktaoua Formation, Morocco [PDF]
R.A. Fortey, G.D. Edgecombe
openaire +1 more source
Ordovician-Silurian true polar wander as a mechanism for severe glaciation and mass extinction. [PDF]
Jing X +5 more
europepmc +1 more source
A Chemical Analysis of Apatite and Zircon Composition From Four Minnesotan Ordovician K-Bentonite Deposits [PDF]
We analyzed the geochemical composition of zircon and apatite crystals found in samples of volcanic tuff collected from four distinct Ordovician volcanic eruptions (Deicke, Dickeyville, Elkport and Millbrig) of the North American Midcontinent, to better ...
Novak, Jeff
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A revision of more than 660 specimens of fossil cephalopods from the Vormsi–Pirgu regional stages (late Katian Stage), Ordovician Period, of Estonia, available from the Estonian palaeontological collections, reveals the extraordinarily high cephalopod ...
Björn Kröger
doaj +1 more source

