@article {618,
	title = {Descent with modification, transformational series, and phylogenetic analyses to infer the evolution of modern conifer families, in Abstracts GSA Annual Meeting Portland},
	journal = {Geological Society of America Abstracts with Program},
	volume = {41},
	year = {2009},
	pages = {563},
	chapter = {563},
	author = {Rothwell, Gar W. and Mapes, Gene and Stockey, Ruth A. and Hilton, Jason and Bateman, Richard M.}
}
