"gigantopterid" = an English noun describing large leaves with complex reticulate venation resembling the Cathaysian fossil seed plant genus Gigantopteris and North American genus Delnortea of the Permian Period, 260 million years ago"

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[ Networking with John M. Miller, Ph.D. ]

The image is a fruiting branch of Gaultheria shallon (Ericaceae, Ericales, Asteranae), commonly known as salal. In 1975, the author photographed the subject with a Nikkormat 35 mm format camera and macrolensing system while using Kodachrome ASA 25 film. The color transparency was converted to digital format using ADOBE PHOTOSHOP more than 40 years later. The shrub was cultivated in a garden in the Willamette Valley of the Pacific Northwest of North America.

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John M. Miller, Ph.D.
University and Jepson Herbaria
Room 1001, Valley Life Sciences Building 2465
University of California, Berkeley
Berkeley, California, USA 94720-2465

[ Guidelines for Authors Wishing to Contribute Popular Articles ]

Articles and notes written in English, which are educational or popular in content may be posted on the Gigantopteroid Dot Org web site. Scientific articles should be submitted to an international, peer-reviewed journal, not to our web sites.

This web site is for educational purposes and not intended to compete with scientific journals. Please consider this philosophy when submitting articles.

Written material should be word processed and mailed to me on official letterhead. Illustrations should be sent as separate emailed JPEG or GIF attachments.

Please use PHOTOSHOP or a similar program to create credits in English clearly stating the source of images and graphics. Names of serials to be spelled-out in full will follow Botanico-Periodicum-Huntianum and its supplement. Kindly do not submit articles and/or illustrations that have already been published.

Manuscripts will be peer reviewed. Authors will have the opportunity to revise their manuscripts prior to publishing on the Gigantopteroid Dot Org web site. I reserve the right to edit and/or delete text not in practice with established English grammar, scientific literary style, and the Botanical Society of America's Statement on Evolution.

Revised, peer-reviewed, and edited text will be converted into HTML together with images to be cached in a separate folder. Scientific contributions both popular and educational in content, once reviewed and revised, would appear on the Gigantopteroid Dot Org web site for an indefinite period of time dependent upon factors beyond our control such as space availability on the hosting server and backlog of articles submitted for electronic publication.

Older articles may be archived on another web site registered under the "gigantopteroid" banner. The sample style sheet below may be used by converting the HTML text in MS WORD or equivalent. The "Page Source" command in INTERNET EXPLORER may also facilitate cutting and pasting of text to create your own template.

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Text space. Authors may introduce an abbreviation in the text in parentheses following the first use of the term after a Primary Header, which is essentially a title of a Chapter. For example, the term evolutionary-development is shortened to evo-devo. The process is repeated in subsequent chapters, which are defined by a new Primary Headers.

Please model your abbreviations and acronyms after conventions used in the three "gigantopteroid" essays. Sentences should not begin with abbreviations or acronyms. Use of fifth-order headers anywhere in text space i.e. to follow text below other higher order headers is permissible (see example below).

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Tables and images imbedded in text. Follow this link to a sample table or see the image layout below when composing page layouts. Use of scale bars is encouraged but not required.   Abbreviations of common terms should be used whenever possible (see above rule).

Naming and colors of chronostratigraphic blocks and bullets. Authors should use "web-safe" colors and names as recommended by the United States Department of the Interior, Geological Survey (USGS, 2010) and Commission for the Geologic Map of the World, if feasible (see reference cited below).

Literature Cited: (required)

Kvaček, J. and H. Eklund. 2003. A report on newly recovered reproductive structures from the Cenomanian of Bohemia (central Europe). International Journal of Plant Sciences 164(6): 1021-1039.

Liu, X.-Q., C.-S. Li, and Y.-F. Wang. 2006. Plants of Leptostrobus Heer (Czekanowskiales) from the early Cretaceous and late Triassic of China, with discussion of the genus. Journal of Integrative Plant Biology 48(2): 137-147.

Mamay, S. H. 1976. Paleozoic Origin of the Cycads. U. S. Geological Survey Professional Paper 934.

Meeuse, B. J. D. 1978. The physiology of some sapromyophilous flowers. Pp. 97-104 In: A. J. Richards (ed.), The Pollination of Flowers by Insects. Academic Press: Linnean Society of London, 213 pp.

Niklas, K. J. 1992. Plant biomechanics: An Engineering Approach to Plant Form and Function. Chicago: University of Chicago Press, 400 pp.

Niklas, K. J. 1997. Adaptive walks through fitness landscapes for early vascular plants. American Journal of Botany 84(1): 16-25.

Rohr, D. M., R. A. Davis, S. H. Mamay, and J. M. Miller. 1987. Leonardian plant-bearing beds from the Del Norte Mountains, west Texas. Pp. 67-68 In: D. W. Cromwell, Jr. and L. J. Mazzullo (eds.), The Leonardian Facies in W. Texas and S.E. New Mexico and Guidebook to the Glass Mountains, West Texas, Society of Economic Paleontologists and Mineralogists (SEPM) Guidebook 87-27. Midland: Permian Basin Section, SEPM, 111 pp.

United States Department of the Interior, Geological Survey (USGS). 2010. Divisions of Geologic Time - Major Chronostratigraphic and Geochronologic Units, USGS Fact Sheet 2010-3059. Reston: USGS.

The photograph below on the left is a weathered rock slab containing the fossilized remains of Delnortea abbottiae from Leonardian plant-bearing beds of the Del Norte Mountains, southwestern North America.

The picture to the right is another view of the same specimen. Further analysis of this significant fossil find was published in the book chapter by Rohr et al. (1987).

Based on these two images what may be deduced on taphonomy, preservation, and later diagenesis and weathering of the fossilized leaf?

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