@article {586,
	title = {The relationship between Euramerican and Cathaysian tropical floras in the Late Palaeozoic: Palaeobiogeographical and palaeogeographical implications},
	journal = { Earth-Science Reviews},
	volume = {85},
	year = {2007},
	pages = {85-116},
	chapter = {85},
	author = {Hilton, Jason and Cleal, Chris J.}
}
@article {554,
	title = {A revision of the Pennsylvanian-aged Eremopteris-bearing seed-plant},
	journal = {International Journal of Plant Sciences},
	volume = {170},
	year = {2009},
	pages = {666-698},
	chapter = {666},
	author = {Cleal, Chris J. and Shute, C. and Hilton, Jason and Carter, J.}
}
@inbook {553,
	title = {Gymnospermophyta},
	booktitle = {The fossil record 2},
	year = {1993},
	pages = {795-808},
	publisher = {Chapman \& Hall},
	organization = {Chapman \& Hall},
	address = {London},
	author = {Cleal, Chris J.},
	editor = {Benton, M.J.}
}
