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Molecular phylogeny, historical biogeography, and divergence time estimates for swallowtail butterflies of the genus Papilio (Lepidoptera: Papilionidae)
Download2004
Sperling, F.A.H., Zakharov, E.V., Caterino, M.S.
Swallowtail butterflies are recognized as model organisms in ecology, evolutionary biology, genetics, and conservation biology but present numerous unresolved phylogenetic problems. We inferred phylogenetic relationships for 51 of about 205 species of the genus Papilio (sensu lato) from...
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Osmunda vancouverensis sp. nov. (Osmundaceae), permineralized fertile frond segments from the Lower Cretaceous of British Columbia, Canada.
Download2006
Vavrek, M.J., Stockey, R.A., Rothwell, G.W.
The Lower Cretaceous (Valanginian to Hauterivian) Apple Bay locality onVancouver Island, British Columbia, has yielded several fragments of fertile permineralized osmundaceous pinnae. Specimens are preserved in calcareous concretions, showing both internal anatomy and allowing for the...
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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...