@article {1346,
	title = {The Callistuphytaceae (Pteridospermopsida): I. Vegetative structures},
	journal = {Palaeontographica Abtheilung B},
	volume = {151},
	year = {1975},
	month = {05/1975},
	pages = {171-196},
	chapter = {171},
	author = {Rothwell, Gar W.}
}
