Acta Palaeontologica Polonica

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.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (for details please see, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.