[ 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.
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
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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?