AMT Elewa, M Calner - Mass extinction, 2008 - Springer
Mass extinction events affect a wide breadth of ecosystems and are one of the major driving mechanisms behind evolution, origination, and diversification of taxa. Such dramatic …
A near-continuous, highly dynamic record of Silurian climate has been determined from conodont δ 18 O compositions (δ 18 O phos), representing stratigraphic sections from four …
The ability to resolve the stratigraphic record of Earth history is critical to understanding past global change events and the range of natural variability within the global paleoclimate. The …
Charts are presented showing the correlation of graptolite biozonations for the Lower Ordovician to Lower Devonian, ie for the entire stratigraphical range of the planktonic …
The Early Palaeozoic Icehouse (Late Ordovician-Early Silurian, c. 455–425 Ma) was a remarkable event in the Earth's climatic history, marked by extensive glaciations occurring at …
Graptoloid evolutionary dynamics show a marked contrast from the Ordovician to the Silurian. Subdued extinction and origination rates during the Ordovician give way, during the …
L Jeppsson, ME Eriksson, M Calner - GFF, 2006 - Taylor & Francis
A succession of 26 conodont zones and 63 successive subzones and conodont faunas have been identified in the exposed latest Landovery to latest Ludlow strata of Gotland, Sweden …
It is well documented that Upper Ordovician and Silurian successions record multiple marine turnover events–including the second-largest mass extinction in the Phanerozoic …