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Psygmophyllopsida, one of the fundamental pteridophytic divisions (Phyla)
Content Provider | Birbal Sahni Institute of Paleobotany |
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Author | Nemejc, F. |
Abstract | In this article the establishment of a fourthpteridophytic phylum the Psygmophyllopsida isexplained. The Devonian Barrandeina Pot. etBern., Duisbergia Kr. et W., Jenisseiphyton Anan.,Haspia Kr. et W. and similar types are attributedhereto. The Devonian Cladoxylineae, the Carboniferous Noeggerathiineae as well as the recent Psilolineae are regarded as special pteridophytic evolutionary trends, arisen directly out of this group. The pteridophytic phylum Sphenopsida (Articulatineae) as well as the gymnospermic phyla Cordailopsida, Ginkgopsida and Coniferopsida are regarded as major evolutionary lines arisen too of this phylum. |
Starting Page | 21 |
Ending Page | 25 |
File Format | |
Volume Number | 9 |
Language | English |
Publisher Date | 1960-01-01 |
Access Restriction | Open |
Content Type | Text |
Educational Use | Research Reading |
Resource Type | Article |
Education Level | Under Graduate Post Graduate |
Subject | Paleobotany; fossil microorganisms |