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Creator:: Escapa, Ignacio H., Rothwell, Gar W., Stockey, Ruth A., and Cuneo, N. Ruben
Abstract:: Premise of the study: Seed cone morphology and anatomy reflect some of the most important changes in the phylogeny and evolutionary biology of conifers. Reexamination of the enigmatic Jurassic seed cone Pararaucaria patagonica reveals previously unknown systematically informative characters that demonstrate affinities with the Cheirolepidiaceae. This paper documents, for the...
Resource Type:: Article
Full Text:: / © 2012 Botanical Society of America Throughout the evolutionary history of conifers phylogeneti

Creator:: Shelton, Glenn W. K., Stockey, Ruth A., Rothwell, Gar W., and Tomescu, Alexandru M. F.
Abstract:: PREMISE OF THE STUDY: Mosses, very diverse in modern ecosystems, are currently underrepresented in the fossil record. For the pre-Cenozoic, fossil mosses are known almost exclusively from compression fossils, while anatomical preservation, which is much more taxonomically informative, is rare. The Lower Cretaceous of Vancouver Island (British Columbia, Canada) hosts...
Resource Type:: Article
Full Text:: American Journal of Botany Exploring the fossil history of

Creator:: Matsunaga, Kelly K. S., Stockey, Ruth A., and Tomescu, Alexandru M. F.
Abstract:: • Premise of the study: Colonists of even the most inhospitable environments, lichens are present in all terrestrial ecosystems. Because of their ecological versatility and ubiquity, they have been considered excellent candidates for early colonizers of terrestrial environments. Despite such predictions, good preservation potential, and the extant diversity of lichenized...
Resource Type:: Article
Full Text:: ): 450–459, 2013; http://www.amjbot.org/ © 2013 Botanical Society of America American Journal of Botany

Creator:: Klymiuk, Ashley A. and Stockey, Ruth A.
Abstract:: Premise of study: Sequence analyses for Pinaceae have suggested that extant genera diverged in the late Mesozoic. While the fossil record indicates that Pinaceae was highly diverse during the Cretaceous, there are few records of living genera. This description of an anatomically preserved seed cone extends the fossil record for...
Resource Type:: Article
Full Text:: Botanical Society of America The family Pinaceae contains 225–232 extant species within 11 genera

Creator:: Rothwell, Gar W., Mapes, Gene, Stockey, Ruth A., and Hilton, Jason
Abstract:: Premise of the study: Pinaceae and nonpinoid species are sister groups within the conifer clade as inferred from molecular systematic comparisons of living species and therefore should have comparable geological ages. However, the fossil record for the nonpinoid lineage of extant conifer families is Triassic, nearly 100 million years older...
Resource Type:: Article
Full Text:: Botanical Society of America Conifers are among the most diverse and economically im- portant of all

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