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Type: Journal article
Title: Gymnostoma tasmanianum sp nov., a fossil Casuarinaceae from the Early Oligocene of Little Rapid River, Tasmania, Australia
Author: Guerin, G.
Hill, R.
Citation: International Journal of Plant Sciences, 2003; 164(4):629-634
Publisher: Univ Chicago Press
Issue Date: 2003
ISSN: 1058-5893
Statement of
Greg Guerin and Robert S. Hill
Abstract: Macrofossils of Casuarinaceae from Early Oligocene sediments at Little Rapid River, Tasmania, are assigned to a new species, Gymnostoma tasmanianum. This is only the second species of fossil Gymnostoma to be formally described and the first species of Gymnostoma to be described from Tasmania. The species is known from both vegetative and reproductive organs. The new taxon is distinguished from other known species by its small stomata, short article length and tooth width, small length:width ratio of articles, glabrous articles, stomata in two to five rows, and teeth elongate with acute apices and sinuses. The fossil record shows that Gymnostoma once had a much wider distribution in Australia than its current occurrence in far north Queensland.
Keywords: Casuarinaceae
Description: Int. J Plant Sci. 164(4):629–634. 2003. © 2003 by The University of Chicago
DOI: 10.1086/375375
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