Aspects of late devonian and early carboniferous palynology of southern Ireland. I. The Cyrtospora cristifer morphon

Abstract

In the Tournaisian deposits of southern Ireland, Cyrtospora cristifer (Luber) nov. comb. et emend. Van der Zwan, Ceratosporites sp.A (present paper) and Mooreisporites sp.A. (present paper) are regular components. These species show continuous variation. In order to emphasize such a variation, the morphon concept is here established. This concept is intermediate between the typological classification and the interpretative palynodeme concept.

In the present paper the taxonomy of the individual species united into the C. cristifer morphon, and the application of the C. cristifer morphon in biostratigraphy and phytogeography are discussed.