نتایج جستجو برای: lower paleogene
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The article is devoted to Yelyzaveta Yakivna Krayeva, a worthy representative of the Ukrainian school micropaleontology P.A. Tutkowsky and O.K. Kaptarenko-Chernousova, senior researcher, Candidate Geological Mineralogical Sciences. Ye.Ya. Krayeva recognized micropaleontologist who made significant contribution study Eocene Oligocene foraminifera Southern Ukraine. She was engaged in Paleogene bi...
Extant Bauhinia (Leguminosae) is a genus of 300 species trees, shrubs, and lianas, widely distributed in pantropical areas, but its diversification history southeastern Asia, one centers highest diversity, remains unclear. We report new fossils three with cuticular preservation from the Paleogene Puyang Basin, southwestern China. Our finding likely extends emergence Asia to late Eocene. Togethe...
BACKGROUND The global movement and speciation of fungal plant pathogens is important, especially because of the economic losses they cause and the ease with which they are able to spread across large areas. Understanding the biogeography and origin of these plant pathogens can provide insights regarding their dispersal and current day distribution. We tested the hypothesis of a Gondwanan origin...
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نظر به اهمیت کنودونتها در تقسیمات چینهنگاری پالئوزوئیک و گسترش قابل توجه نهشتههای دونین پسین و کربونیفر پیشین در منطقه کرمان سه برش چینهشناسی (حور، هوتک و شمس آباد) در شمال استان کرمان انتخاب و بویژه بر اساس کنودونتها و بقایای ماهیان مورد مطالعه قرار گرفتند. مجموعه کنودونتهای بدست آمده از برش حور شامل 20 گونه متعلق به دو جنس polygnathus و icriodus بوده و سنی معادل فرازنین پسین را نشان می...
Mitchell et al. argue that divergence-time estimates for our avian phylogeny were too young because of an "inappropriate" maximum age constraint for the most recent common ancestor of modern birds and that, as a result, most modern bird orders diverged before the Cretaceous-Paleogene mass extinction event 66 million years ago instead of after. However, their interpretations of the fossil record...
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