1975
DOI: 10.2307/1219491
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Reclassification of Psilophyta

Abstract: JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. International Association for Plant Taxonomy (IAPT) is collaborating with JSTOR to digitize, preserve and extend access to Taxon. SummaryThe historical reasons for the failure… Show more

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Cited by 119 publications
(52 citation statements)
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“…The oldest fossil proven to be a vascular land plant is Cooksonia, from the late Silurian Period (ca. 420 Ma) (16). Much of the paleobotanical work in the 1970s suggested that the timeframe for the initial diversification of land plants was between the late Silurian and early Devonian (410 Ma).…”
Section: Evolution Of Land Plants and Theirmentioning
confidence: 99%
“…The oldest fossil proven to be a vascular land plant is Cooksonia, from the late Silurian Period (ca. 420 Ma) (16). Much of the paleobotanical work in the 1970s suggested that the timeframe for the initial diversification of land plants was between the late Silurian and early Devonian (410 Ma).…”
Section: Evolution Of Land Plants and Theirmentioning
confidence: 99%
“…The approach outlined in this paper does not differ fundamentally from approaches previously used in paleobotany to interpret early land plant evolution (Banks, 1975;Chaloner, 1970b), early angiosperm evolution (Doyle, 1978;Doyle & Hickey, 1976), and studies of the major patterns of angiosperm leaf architecture (Hickey & Wolfe, 1975). It differs only in being relatively explicit and in attempting to define a highly resolved hierarchy of relationships.…”
Section: Discussionmentioning
confidence: 99%
“…Today, the lack of counterpart and absence of fertile organs prevent such a taxonomic identification. Psilophytites was created for vegetative axes of various affinities that, like the specimen described here, present undivided spines scattered on the surface (HĂžeg, 1952;Banks, 1975;Gerrienne, 1992). The specimen from Dechra AĂŻt Abdallah differs from Psilophytites rectissimus from the Lower Devonian of Norway which is larger in diameter and branches rarely (HĂžeg, 1967;Gerrienne, 1992).…”
Section: Discussionmentioning
confidence: 90%