Megaspores of the turma zonales from the Carboniferous of Poland. Part II - Reconsideration of the genus Triangulatisporites
Jadwiga Karczewska
Acta Palaeontologica Polonica 21 (4), 1976: 331-363
The genus Triangulatisporites is emended. The descriptionsof the four known species are supplemented and five new species are described. The structure of the spore wall was studied with the SEM and in transmitted light; the mainwall layers are: mesospore, exospore and perispore. The perispore structure in Triangulatisporites is the basic taxonomic feature. The natural relationships of these megaspores are discussed.
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