id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
gc-960	Šimunek, Zbynek	Revision of the genus Cordaites UNGER from the Permian of the Intrasudetic Basin (Broumov Formation, Olivětín Member, Czech Republic)	2019	10	.pdf	application/pdf	6674	438	69	Since then, tens of Cordaites species have been described based on leaf morphology and venation. BAR­ THEL (1976) was aware of the problem of the correct determina­ tion of Cordaites species and came to the conclusion that it is not possible to distinguish three long­leaved Cordaites species –	cache/gc-960.pdf	txt/gc-960.txt