Aspects of Palynology |
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Page 85
... Densosporites has been experienced because the spores are rarely preserved in such a manner as to give a lateral view of the cingulum . The discovery of tetrads of Densosporites ( Kosanke , 1950 ) has aided in the interpretation of the ...
... Densosporites has been experienced because the spores are rarely preserved in such a manner as to give a lateral view of the cingulum . The discovery of tetrads of Densosporites ( Kosanke , 1950 ) has aided in the interpretation of the ...
Page 239
... Densosporites . This relationship is clarified by examination of thin sections of both genera , as reported by Hughes , Dettmann , and Playford ( 1962 ) . The relationship is with those species of Densosporites in which the peripheral ...
... Densosporites . This relationship is clarified by examination of thin sections of both genera , as reported by Hughes , Dettmann , and Playford ( 1962 ) . The relationship is with those species of Densosporites in which the peripheral ...
Page 240
... Densosporites ( pl . 12-1 , figs . 21 and 22 ) occurs in Devonian , Mississippian , and Pennsylvanian rocks throughout the world . The type species is D. covensis Berry 1937 , and it represents a dom- inant element of many coal samples ...
... Densosporites ( pl . 12-1 , figs . 21 and 22 ) occurs in Devonian , Mississippian , and Pennsylvanian rocks throughout the world . The type species is D. covensis Berry 1937 , and it represents a dom- inant element of many coal samples ...
Contents
INTRODUCTION | 1 |
WALL STRUCTURE | 35 |
SYSTEMATICS AND NOMENCLATURE | 49 |
Copyright | |
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Common terms and phrases
abundant acritarchs affinities algae angiosperm aperture archeopyle areas assemblages Barghoorn Bentall bisaccate Cambrian Carboniferous Cenozoic classification climate coal conifer correlation Couper cysts deposits Dettmann Devonian dinoflagellates distal Downie early Eisenack Eocene equatorial Erdtman evidence exine ferns Figure Formation forms fossil Frasnian genera genus Geol geologic groups Ibrahim Jour Jurassic Kremp late Lower lycopods marine megafossils megaspores Mesozoic microfossils microns microspores Middle Miocene miospores Mississippian modern monolete morphologic Naumova nomenclature occur Oligocene organic Paleocene Paleozoic palynological palynomorphs Pennsylvanian Permian Pflug plant microfossils plates Playford Pleistocene Pliocene pollen and spores pollen floras pollen grains PotoniƩ and Kremp Precambrian proximal proximo-distal view Quaternary range record reported represented rocks samples Schopf sediments shales Silurian similar specimens spores spores and pollen sporites Staplin strata stratigraphic structure studies surface Tasmanites taxa taxonomic Tertiary tetrad theca thickening tion Triassic trilete spores type species Upper Cretaceous wall Wilson zone