@inbook {641,
	title = {Dynamic Hypotheses of richness on islands and continents},
	booktitle = {New directions in the geography of nature},
	year = {2004},
	pages = {212-231 },
	publisher = {Sinauer Ass. Inc.},
	organization = {Sinauer Ass. Inc.},
	chapter = {Frontiers of Biogeography},
	address = {Sunderland, Massachusets},
	author = {Whittaker, R.J.},
	editor = {Lomolino, M.V. and Heany, L.R.}
}
@article {620,
	title = {Seed coat anatomy of Ceratozamia mexicana (Cycadales)},
	journal = {The Botanical Review},
	volume = {70},
	year = {2004},
	pages = {24-38},
	chapter = {24},
	author = {S{\'a}nchez-Tinoco, Mar{\'\i}a Ydelia and Engleman, E. Mark}
}
@article {573,
	title = {Defining the gigantopterid concept: a reinvestigation of Gigantopteris (Megalopteris) nicotianaefolia Schenck and its taxonomic implications},
	journal = {Palaeontology},
	volume = {47},
	year = {2004},
	pages = {1339-1361},
	chapter = {1339},
	author = {Glasspool, I.G. and Hilton, Jason and Collinson, M.E. and Wang, S.J.}
}
