Journal
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
Volume 209, Issue -, Pages 35-40Publisher
ELSEVIER
DOI: 10.1016/j.revpalbo.2014.05.007
Keywords
Lycopsid; Rhizomorph; Cormose; Gondwana; Waterloo Farm
Categories
Funding
- Belgian FNRS
- Rhodes University
- South African National Roads Agency
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The rhizomorphs of Early (Devonian and Early Carboniferous) arborescent lycopsids are known from only a handful of taxa. That of Leptophloeum is previously described from a single fragmentary specimen from China that, in our opinion, has been incorrectly interpreted. Here we describe several relatively well-preserved examples of Leptophloeum rhizomorphs from the Famennian aged Waterloo Farm Lagerstatte of South Africa. We demonstrate an unlobed cormose morphology separated from the microphyll bearing axis by a smooth transition zone. This provides one of the few known examples of a cormose lycopsid rhizomorph dating back to the Devonian. We assign this material and all previously published South African Leptophloeum material to Leptophloeum rhombicum. (C) 2014 Elsevier B.V. All rights reserved.
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