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Article: Amyelon in American coal-balls

Publication: Palaeontology
Volume: 7
Part: 2
Publication Date: July 1964
Page(s): 186 209
Author(s): Arthur A. Cridland
Addition Information

How to Cite

CRIDLAND, A. A. 1964. Amyelon in American coal-balls. Palaeontology7, 2, 186–209.

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The Palaeontological Association (Free Access)


Premnoxylon iowense Pierce and Hall is recombined as Amyelon iowense. These cordaitean roots resemble the stilt roots of modern mangroves. They are usually siphonostelic and possess aerenchyma composed of phloem and phelloderm. Increase in circumference of a deep-seated periderm distended the outer part of the phloem. Aerenchymatous phelloderm was laid down and cortex was sloughed; leaving periderm the outermost tissue. Lenticels flank clusters of lateral rootlets.
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