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Author:
Florin,R.
Year:
1937
Title:
On the morphology of the pollen grains in some Palaeozoic Pteridosperms.
Reference:
Florin,R. (1937) On the morphology of the pollen grains in some Palaeozoic Pteridosperms. Svensk Botanisk Tidskrift Vol. 31 P. 305- 338
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Genus Species Country(Region) From To
Aetheotesta Aetheotesta elliptica France Stephanian
Aulacotheca Aulacotheca elongata Scotland(Lanark) Westphalian
Boulaya Boulaya fertilis England(Staffordshire) Westphalian
Codonotheca Codonotheca caduca France Stephanian
Conostoma Conostoma anglo-germanicum England Westphalian
Conostoma Conostoma oblongum England Westphalian
Crossotheca Crossotheca crepini France Stephanian
Crossotheca Crossotheca hughesiana England(Staffordshire) Westphalian
Crossotheca Crossotheca kidstoni England(Staffordshire) Westphalian
Crossotheca Crossotheca sagittata Illinois Middle Pennsylvanian
Crossotheca Crossotheca schatzlarensis France Stephanian
Cyclotheca Cyclotheca biseriata France Stephanian
Dolerotheca Dolerotheca fertilis France Stephanian
Gnetopsis Gnetopsis elliptica France Stephanian
Goldenbergia Goldenbergia glomerata W.Germany(Saarland) Westphalian
Heterotheca Heterotheca grievii Scotland(Fife) Nd
Lagenostoma Lagenostoma lomaxi England Nd