@book {1407,
	title = {Prosyllabus Tracheophytorum. Tentamen systematis plantarum vascularium (Tracheophyta)},
	year = {2001},
	pages = {1-110 + I-LXXX },
	publisher = {GEOS},
	organization = {GEOS},
	address = {Moscow},
	author = {Doweld, Alexander B.}
}
@article {698,
	title = {An Early Permian flora with Late Permian and Mesozoic affinities from North-Central Texas},
	journal = {Journal of Paleontology},
	volume = {75},
	year = {2001},
	pages = {449-460},
	chapter = {449},
	doi = {doi:0022-3360/01/0075-449},
	url = {http://www.bioone.org/doi/pdf/10.1666/0022-3360(2001)075\%3C0449\%3AAEPFWL\%3E2.0.CO\%3B2},
	author = {DiMichele, William A. and Mamay, Sergius H. and Chaney, Dan S. and Hook, Robert W. and Nelson, W. John}
}
@article {590,
	title = {The southern conifer family Araucariaceae: history, status, and value for paleoenvironmental reconstruction},
	journal = {The Annual Review of Ecology, Evolution, and Systematics},
	volume = {32},
	year = {2001},
	pages = {397-414},
	chapter = {397},
	author = {Kershaw, P. and Wagstaff, B.}
}
@article {576,
	title = {The evolutionary split of Pinaceae from other conifers: evidence from an intron loss and a miltigene phylogeny},
	journal = {Molecular Phylogenetics and Evolution },
	volume = {21},
	year = {2001},
	pages = {167-175},
	chapter = {167},
	author = {Gugerli, F. and Sperisen, Ch. and Buchler, U. and Brunner, I. and Brodbeck S. and Palmer J.D. and Qui Y.L.}
}
@article {486,
	title = {Barthelia furcata gen. nov. et sp. nov., with a review of paleozoique coniferiphytes and a discussion of coniferophyte systematics},
	journal = {International Journal of Plant Sciences},
	volume = {162},
	year = {2001},
	pages = {637-667},
	chapter = {637},
	url = {http://www.jstor.org/stable/3079990},
	author = {Rothwell, Gar W. and Mapes, Gene}
}
@article {471,
	title = {THUCYDIACEAE Fam. nov., with a review and reevaluation of paleozoic walchian conifers},
	journal = {International Journal of Plant Sciences},
	volume = {162},
	year = {2001},
	pages = {1155-1185},
	chapter = {1155},
	url = {http://oak.cats.ohiou.edu/~gh339591/pdf/pdf3.pdf},
	author = {Hernandez-Castillo, Genaro R. and Rothwell, Gar W. and Mapes, Gene}
}
