Did Flowers Exist During the Carboniferous Epoch?
نویسندگان
چکیده
منابع مشابه
Did a dental profession exist in ancient Egypt during the 3RD millennium B.C.?
As Professor Ghalioungui has intimated,' my studies of the dental pathology revealed in collections of ancient Egyptian dry skulls have caused me to reject the current belief that an organized dental profession existed in the time of the Old Kingdom. The arguments I have adduced to support my contention have been set out in a series of articles published during the past few years.2 However, sin...
متن کاملWhen vertebrates invaded land during the Carboniferous
period, they were exposed not only to new ecological opportunities but also to a desiccating environment (Williams and Tieleman, 2002). To maintain cellular water homeostasis in such an environment, natural selection modified the integument of pioneering terrestrial animals, enabling them to reduce water loss through the skin. Nowhere is this modification of the integument more important than f...
متن کاملThe courage to study what we wish did not exist.
This editorial marks the final issue of Volume 15 of the Journal of Trauma & Dissociation (JTD). Much like the work of compiling manuscripts for this volume, it reflects a collaboration between the editorial assistant (Smith) and the editor (Freyd). We bring to this editorial our perspectives from our JTD work but also our insights from work as researchers of institutional betrayal. Most recent...
متن کاملDid a dental profession exist in Ancient Egypt?
1. THE EXISTENCE OF DENTISTS Dr. Leek, the author of these arguments states that the specialization of Hesy-Re, an Ancient Egyptian physician said to be a dentist by many Egyptologists, is doubted by some others. He contends that his title 'wr ibh swnw', translated Chief of Dental Physicians by Junker Jonckheere4 and Lefebvre" could be an obscure non-medical attribution. This purely philologica...
متن کاملChanges in ocean denitrification during Late Carboniferous glacial–interglacial cycles
Department of Geology, University of Cincinnati, Cincinnati, Ohio 45221-0013, USA Department of Earth and Environmental Sciences, University of Texas at Arlington, Arlington, Texas 76019, USA Center for Applied Energy Research, 2540 Research Park Drive, Lexington, Kentucky 40511, USA Institute for Geology and Mineralogy, University of Cologne, D-50674 Cologne, Germany Barrett Honors College, Ar...
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ژورنال
عنوان ژورنال: Nature
سال: 1879
ISSN: 0028-0836,1476-4687
DOI: 10.1038/019582a0