A89D0D7C-6E82-423E-AAE3-9CC7813873FFOrigin and early diversification of vascular plants: integrating evidence from the plant megafossil and dispersed spore fossil recordsResearch GrantNE/E006612/18A03ED41-E67D-4F4A-B5DD-AAFB272B6471NERCINCOME_ACTUAL140459EBD6FCEB-569F-4507-802C-7A1E502F3A2ESpore Wall Ultrastructure of the Lower Devonian Zosterophylls Renalia hueberi and Zosterophyllum divaricatumInternational Journal of Plant Sciences9ab66561ae0b62cfc3857ed34fd1f18fGensel P2013-01-01http://dx.doi.org/10.1086/673240http://dx.doi.org/10.1086/6732409Journal Article/Reviewdoi_53d03f03f5e4bd91