Author:
Gensel,P.G.;Andrews,H.N.;Forbes,W.H.
Year:
1975
Title:
A new species of Sawdonia with notes on the origin of microphylls and lateral sporangia.
Reference:
Gensel,P.G. et al. (1975) A new species of Sawdonia with notes on the origin of microphylls and lateral sporangia. Botanical Gazette Vol. 136 # 1 P. 50- 62
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Genus Species Country(Region) From To
Sawdonia Sawdonia acanthotheca sp. nov. Canada(New Brunswick) Middle Devonian
Spore Spore sp Canada(New Brunswick) Middle Devonian