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Phylogenetic diversification of Equisetum (Equisetales) as inferred from Lower Cretaceous species of British Columbia
Download2009
Stockey, Ruth A., Stanich, Nicholas A., Rothwell, Gar W.
Three types of anatomically preserved vegetative shoots with features that characterize crown group Equisetum have been discovered in Lower Cretaceous deposits ( ≈ 136 Ma) of British Columbia, Canada, suggesting the genus is much older than currently believed. Specimens include two types of...
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Sedimentological, Ichnological, and Architectural Characteristics of Geobodies in a Fluvial to Estuary Setting: the McMurray Formation in the Christina River area, NE Alberta, Canada
DownloadSpring 2023
The Lower Cretaceous McMurray Formation is the primary host of the crude bitumen reserves in the Athabasca Oils Sand Region. The regionally extensive meander belts associated with estuary point bars have been recognized as the primary reservoir facies in the McMurray Formation. It is widely...