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Devonian Landscape Heterogeneity Recorded by a Giant Fungus
(Geological Society of America, 2007)
The enigmatic Paleozoic fossil Prototaxites Dawson 1859 consists of tree-like trunks as long as 8 m constructed of interwoven tubes <50 mm in diameter. Prototaxites specimens from five localities differ from contemporaneous ...
Organic Chemical Differentiation Within Fossil Plant Cell Walls Detected with X-ray Spectromicroscopy
(Geological Society of America, 2002)
Organic matter preserved in cell walls of permineralized plant fossils was analyzed by using scanning transmission X-ray microscopy and spectroscopy at energies near the 1<i>s</i> absorption edge of carbon. Microchemical ...
Chemical Evidence for Cell Wall Lignification and the Evolution of Tracheids in Early Devonian Plants
(University of Chicago Press, 2003)
Anatomically preserved land plant fossils from the Lower Devonian Rhynie Chert contain conducting tissues with cells that range from dark-colored, elongated cells without secondary wall thickenings to tracheids similar to ...