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Cycads


B.J. Axsmith et al. (2003): The enigmatic Paleozoic plants Spermopteris and Phasmatocycas reconsidered. PDF file, American Journal of Botany, 90: 1585-1595.

AXSMITH, BRIAN J1, RUDOLPH SERBET2, MICHAEL KRINGS2, THOMAS N TAYLOR2, and EDITH L TAYLOR2. 1Department of Biological Sciences, University of South Alabama, Mobile, Alabama; 2Department of Ecology and Evolutionary Biology and Natural History Museum and Biodiversity Research Center, University of Kansas, Lawrence. - New intepretations of the enigmatic Paleozoic plants Spermopteris and Phasmatocycas. Abstract. Botany 2001, August 12 - 16, 2001; Albuquerque, New Mexico.

Phil and Jesse Bergman, Jungle Music Palms and Cycads, San Diego CA: Cycads. Visit the Cycad Photo Gallery. There are 437 pictures in the gallery.

Museum of Paleontology (UCMP), University of California, Berkeley: Introduction to the Cycads, Legacy of the Mesozoic. See also: Cycads: Fossil Record.

Blue Forest Safaris (Morne Fouche): Africa Cycads.

J.G. Bornemann (1856): Über organische Reste der Lettenkohlengruppe Thüringens: Ein Beitrag zur Fauna und Flora dieser Formation, besonders über fossile Cycadeen, nebst ... (in German). Provided by Google books.

E.D. Brenner et al. (2003): Cycads: evolutionary innovations and the role of plant-derived neurotoxins. In PDF, Trends in Plant Science, 8.

! Robert Buckley Trabuco Canyon, California, (Illustrations by Douglas Henderson, John Sibbick and Mark Hallet), The Palm & Cycad Societies of Florida (PACSOF): The Fossil Cycads. See also
! here (in PDF).

Robert Buckley Trabuco Canyon, California: Inducing adventitious root growth in cycad leaves. Reprinted with permission from The Cycad Newsletter, Issue 1, 1999. This article is a 388 Kb PDF document and must be viewed using the Adobe Acrobat Reader plug-in.

R.J. Butler et al. (2009): Testing co-evolutionary hypotheses over geological timescales: interactions between Mesozoic non-avian dinosaurs and cycads. PDF file, Biol. Rev., 84: 73–89.

Bane Cheek, Polk Community College, Winter Haven, Florida: An Introduction to Cycad Reproduction.

Bane Cheek, Polk Community College, Winter Haven, Florida: Cycads.

Curtis Clark, Biological Sciences Department California State Polytechnic University, Pomona: Plant Morphology. Resources. Go to: Lab 12: Cycadophyta, Ginkgophyta.

Lynne M. Clos, Fossil News: Cycads: Living Fossils. See also: Field Adventures in Paleontology: Hunting For Fossil Cycads in Petrified Forest National Park, Arizona.

! N.R. Cúneo et al. (2010): Review of the Cycads and Bennettitaleans from the Mesozoic of Argentina. In PDF, see also here. PDF file, Book: Plants in Deep Mesozoic Time: Morphological Innovations, Phylogeny, Ecosystems (Ted Delevoryas dedication volume). Indiana University Press.

The Cycad Newsletter. Provided by the Cycad Society, a non-profit organization dedicated to the conservation of cycads through education and scientific research.

! The Cycad Society. A non-profit organization dedicated to the conservation of cycads through education and scientific research. Read examples of the interesting articles that have appeared in The Cycad Newsletter. Visit The Cycad Photo Gallery.

! The Cycad Society: Glossary of Cycad Terms. Consisting of two parts: Illustrated Glossary of Cycad Terms, and Expanded Glossary of Cycad Terms (PDF file).

Jose Manuel Sanchez de Lorenzo Cáceres, Palm & Cycad Societies of Florida, Inc.: The Cycads: Fossils of the Past.

Paolo De Luca, Dipartimento di Biologia vegetale and Orto Botanico, Universita di Napoli, Italia: A Historical Perspective on Cycads from Antiquity to the Present. The historical aspects of the acquisitions of cycad collections in botanical gardens are outlined, and a brief survey of the history of cycads in various cultures is given.

The Cycad Society of South Africa. ^

! C.C. Davis and H. Schaefer (2011): Plant Evolution: Pulses of Extinction and Speciation in Gymnosperm Diversity. See also here (abstract).

W.A. DiMichele et al. (2001): An Early Permian flora with Late Permian and Mesozoic affinities from north-central Texas. In PDF.

! dmoz, the Open Directory Project:
Science: Biology: Flora and Fauna: Plantae:
Cycadophyta. See also:
Earth Sciences: Paleontology: Paleobotany: Taxa.

! Christopher J. Earle (server space has been provided by the Department of Botany, Rheinische Friedrich-Wilhelms-Universität Bonn, Germany): The Gymnosperm Database. Currently the database provides basic information for all species and higher-ranked taxa of the gymnosperms, i.e., conifers, cycads, and their allies. You may navigate from the species list, alphabetized by binomial.

Palmengarten, Frankfurt am Main, Das Tor zur Welt der Pflanzen: Palmfarne - weder Palmen noch Farne (in German).

! Florida Museum of Natural History, University of Florida, Gainesville:
Cycads and Ginkgo (Powerpoint presentatation).

R. Gorelick and K. Olson (2011): Is lack of cycad (Cycadales) diversity a result of a lack of polyploidy? Abstract, Botanical Journal of the Linnean Society, 165: 156-167.

David R. Greenwood, Victoria University of Technology, Melbourne (Palm and Cycad Societies of Australia, PACSOA): Cycad Articles, Australian Fossil Cycads.

Guido Grimm, Department of Palaeobotany, Swedish Museum of Natural History, Stockholm: Cladistic analyses of fossil and recent Cycadales based on morphological and molecular data. See also:
The Best Tree Cladogram, and here (abstract), and there "Phylogenie der Cycadales" (in German).

! T.M. Harris (1961): The fossil cycads. PDF file.

! Jody L. Haynes (c/o Palm and Cycad Societies of Florida): Virtual Cycad Encyclopedia. Information about cycad taxonomy, biology, evolution, horticulture, conservation, etc.

M. Haworth et al. (2011): Cycads show no stomatal-density and index response to elevated carbon dioxide and subambient oxygen. Abstract, Australian Journal of Botany.

Elizabeth J. Hermsen et al. (2009): Morphology and ecology of the Antarcticycas plant. PDF file, Review of Palaeobotany and Palynology, 153: 108-123. Antarcticycas plant reconstruction on page 112.

E. Hermsen et al. (2007): Cycads from the Triassic of Antarctica: Permineralized cycad leaves. PDF file, Int. J. Plant Sci., 168: 1099-1112.

E.J. Hermsen et al. (2006): Cataphylls of the Middle Triassic cycad Antarcticycas schopfii and new insights into cycad evolution. PDF file, American Journal of Botany, 93: 724-738. See also here.

! Ken D. Hill et al. (2004): The World List of Cycads. PDF file.

! Ken D. Hill and D.W. Stevenson, Royal Botanic Gardens Sydney: The Cycad Pages. Botanical information and links, including identification and classification of cycads, ecology and conservation, cycad evolution and the fossil record, geography and distribution, as well as horticultural and general information. Excellent! Go to: John Hendricks, Ken D. Hill, Roy Osborne and Dennis Stevenson, Royal Botanic Gardens Sydney: The World List of Cycads. The lists as published gave the valid names of all known extant cycads.

L. Kessler, The New York Times: The Cult of the Cycads.

S.D. Klavins et al. (2005): Coprolites in a Middle Triassic cycad pollen cone: evidence for insect pollination in early cycads? PDF file, Evolutionary Ecology Research, 7: 479-488.

S.D. Klavins et al. (2003): Gymnosperms from the Middle Triassic of Antarctica: the first structurally preserved cycad pollen cone. In PDF, Int. J. Plant Sci., 164: 1007-1020.

Palm and Cycad Societies of Australia (PACSOA).

The Palm Haven. Palm Trees, Cycads, Bromeliads and other Tropical Plants. Go to: Cycads.

Conrad C. Labandeira et al. (2007): Pollination drops, pollen, and insect pollination of Mesozoic gymnosperms. PDF file, Taxon, 56:663-695.

Gerhard Leubner Lab, University Freiburg, Germany: Seed Evolution. Go to: Jurassic parc/Mesozoic era: Extinct gymnosperms and living ancient gymnosperms. Extant Cycadales and extinct Bennettitales.

Yuandan MA et al. (2009): Carbon storage of cycad and other gymnosperm ecosystems in China: implications to evolutionary trends. PDF file, Polish Journal of Ecology, 57: 635-646.

Department of Botany, University of Wisconsin, Madison: Plant Systematics Collection. This web site provides structured access to a teaching collection of plant images representing over 250 families and 1000 genera of vascular plants. Go to: Phylum Cycadophyta The Cycads).

SERGIUS H. MAMAY, DAN S. CHANEY, AND WILLIAM A. DIMICHELE: A Mesozoic-type flora from the Lower Permian of Texas. Abstract, 1998 Annual Meeting of the Botanical Society of America, 2-6 August, 1998 Baltimore, MD. Specimens of Dioonitocarpidium!

John M. Miller (gigantopteroid.org), University of California, Berkeley: Origin of Angiosperms. See also here or navigate from essay contents. Go to:
! Cycadales.

! Palaeobotanical Research Group, Münster, Westfälische Wilhelms University, Münster, Germany. History of Palaeozoic Forests, CYCADS. Link list page with rankings and brief explanations. Images of modern cycads.

! N.S. Nagalingum et al. (2011): Recent Synchronous Radiation of a Living Fossil. Abstract.
"Using fossil-calibrated molecular phylogenies, we show that cycads underwent a near synchronous global rediversification beginning in the late Miocene, followed by a slowdown toward the Recent. Although the cycad lineage is ancient, our timetrees indicate that living cycad species are not much older than ~12 million years". See also here and there. In PDF, Science 334.

netfirms: The Cool Tropics, Research Cycads. A directory.

Paläontologische Museum Nierstein: Image of Dioonitocarpidium pennaeforme (website in German).

! Y. Ogura, Department of Botany, Faculty of Science, University of Tokyo, Tokyo, Japan, (page hosted by Botany online, The Internet Hypertextbook, Biological Classics in the Internet): HISTORY OF DISCOVERY OF SPERMATOZOIDS IN GINKGO BILOBA AND CYCAS REVOLUTA. PHYTOMORPHOLOGY, Vol 17, 109 - 114 (1967).

The Palm and Cycad Societies of Australia (PACSOA): PACSOA is a group of affiliated, semi-autonomous, regional Palm and/or Cycad Societies, based in Brisbane, Queensland.

The Palm and Cycad Society of Florida. The fossil Cycads. With paintings and reconstructions of Douglas Henderson, John Sibbick, and Mark Hallett.

The Palm & Cycad Societies of Florida (PACSOF): Virtual Cycad Encyclopedia. Worth to visit: Chapter 4: Cycad evolution.

Bill Parker, Arizona: Chinleana. Discussion of Late Triassic paleontology and other assorted topics. Go to:
Discovery of an Entire Fossil Cycad from the Late Triassic of China (September 07, 2009).

Joe & Karen Perner, Katherine, Northern Territory, Australia: Cycad International. A Cycad Gardens Nursery. Go to: What are Cycads, or visit the Cycads Gallery.

! Kathleen B. Pigg, Department of Plant Biology, Arizona State University: Laboratory. Go to: The Cycads, Cycadeoids (Bennettitales) and Ginkgophytes.

! Christian Pott and Michael Krings (2010): Gymnosperm Foliage from the Upper Triassic of Lunz, Lower Austria: an annotated check list and identifiation key. PDF file, Geo.Alp, 7: 19-38.

! C. Pott et al. (2012): Baikalophyllum lobatum and Rehezamites anisolobus: Two Seed Plants with "Cycadophyte" Foliage from the Early Cretaceous of Eastern Asia. Paper awarded with the Remy and Remy Award 2012, Botanical Society of America.

! C. Pott et al. (2010): Late Palaeozoic foliage from China displays affinities to Cycadales rather than to Bennettitales necessitating a re-evaluation of the Palaeozoic Pterophyllum species. PDF file, Acta Palaeontol. Pol., 55: 57-168.

C. Pott et al. (2007): Pseudoctenis cornelii nov. spec. (cycadalean foliage) from the Carnian (Upper Triassic) of Lunz, Lower Austria. PDF file, Ann. Naturhist. Mus. Wien, 109 A: 1-17.

Alberto Prado (2011): The Cycad Herbivores. PDF file, Bulletin de la Société d´entomologie du Québec.

Mary Ann Reihman, Biological Sciences, Natural Sciences and Mathematics, California State University, Sacramento: Biology lecture notes. Go to: Comparison of Cycadophyte Misc. Gymnosperms (Bennettitales).

Bernard Renault, 1881-1885 (provided by Gallica): Cours de botanique fossile fait au Muséum d'histoire naturelle.- Première année (1881). Cycadées, zamiées, cycadoxylées, cordaïtées, poroxylées, sigillariées, stigmariées.

! S. Renner (2009): Gymnosperms. PDF file, In: S.B. Hedges and S. Kumar (eds.): The Timetree of Life (see here).

Gar W. Rothwell, Department of Environmental and Plant Biology, Ohio University, Athens, OH: Vascular Plant Morphology. This course covers the structure, development, reproductive biology and relationships of vascular plants. The course is structured to emphasize the evolutionary changes that led to the diversity of modern tracheophytes. Go to: Cycads (PDF file).

B. Rozynek (2008): Schozachia donaea n. gen., n. sp., a new cycad megasporophyll from the Middle Triassic (Ladinian) of Southern Germany. PDF file, PALAEODIVERSITY 1: 1-18.

Vincent L. Santucci, National Park Service, Kemmerer, WY, and Marikka Hughes, Peabody Museum of Natural History, Paleobotany Division, New Haven: Fossil Cycad National Monument: A Case of Paleontological Resource Mismanagement.

D. Schneider et al. (2002): Cycads: their evolution, toxins, herbivores and insect pollinators. PDF file.

Scott Singleton, Houston Gem and Mineral Society: Petrified Wood Articles by HGMS Authors and Others, Cycad Anatomy and Fossil Occurrences in Texas. PDF file, 2006.

STOCKEY, RUTH1 and GAR W. ROTHWELL2. 1Department of Biological Sciences, University of Alberta, Edmonton: 2Department of Environmental and Plant Biology, Ohio University, Athens, Ohio: Permineralized cycad seeds from the Jurassic of British Columbia, Canada. Abstract. Botany 2001, August 12 - 16, 2001; Albuquerque, New Mexico.

Ralph E. Taggart, Department of Botany and Plant Pathology/Department of Geological Sciences at Michigan State University, East Lansing: BOT335 Lecture Schedule. Cycadophytes, the True Cycads;

! X. Wang et al. (2009): The discovery of whole-plant fossil cycad from the Upper Triassic in western Liaoning and its significance. See also here. (in PDF).

! T. Walters and R. Osborne (eds., 2004): Cycad Classification: Concepts and Recommendations. 288 pages. Provided by CABI Publishing through the Google Print Publisher Program. Registration procedure required. Use "More results from this book" or "Search this book" to navigate. Unfortunately, you can view two pages around your search result, but you can search again! Use Google Book Search to search the full text of books.

Shi-Jun Wang et al. (2011): Cycad Wood from the Lopingian (Late Permian) of Southern China: Shuichengoxylon tianii gen. et sp. nov. PDF file, Int. J. Plant Sci., 172: 725-734.

X. Wang et al. (2009): The discovery of whole-plant fossil cycad from the Upper Triassic in western Liaoning. Abstract, Chinese Science Bulletin.

George Reber Wieland, (photograph). Go to: Vincent L. Santucci, National Park Service, Kemmerer, WY, and Marikka Hughes, Peabody Museum of Natural History, Paleobotany Division, New Haven: Fossil Cycad National Monument: A Case of Paleontological Resource Mismanagement. See also here.

! Wikipedia, the free-content encyclopedia: Spermatophyte. Go to: Cycadophyta, and Fossil Cycad National Monument.

YAHOO: Science > Biology > Botany > Plants > Trees > Gymnosperms > Cycad.

J.M. Zgurski et al. (2008): How well do we understand the overall backbone of cycad phylogeny? New insights from a large, multigene plastid data set. PDF file, Molecular Phylogenetics and Evolution.

Zhu Jia-nan and Du Xian-ming: A New Cycad - Primocycas chinensis gen. et sp. nov. discovered from the Lower Permian in Sha-nxi, China and its Significence. Abstract, Journal of Integrative Plant Biology (formerly Acta Botanica Sinica).













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