@article {114,
	title = {Araceae from the Early Cretaceous of Portugal: evidence on the emergence of monocotyledons},
	journal = {Proc. Natl. Acad. Sci. USAProc. Natl. Acad. Sci. USA},
	volume = {101},
	number = {47},
	year = {2004},
	pages = {16565-16570},
	keywords = {fossil angiosperms, angiosperm evolution, striate pollen, zona-aperturate pollen, extinctions},
	author = {Friis, Else Marie and Pedersen, Kaj Raunsgaard and Crane, Peter R.}
}
@article {31,
	title = {Early Cretaceous lineages of monocot flowering plants},
	journal = {Proc. Natl. Acad. Sci. USAProc. Natl. Acad. Sci. USA},
	volume = {97},
	number = {9},
	year = {2000},
	pages = {4707-4711},
	keywords = {Cretaceous, fossils, monocots},
	author = {Bremer, Kare}
}
