Eighteen taxa of the genus Jurinea Cass. growing naturally in Turkey were classified by numerical taxonomic analysis. Morphological and palynological characters of each individual were measured and quantified on the basis of 51 traits. Ten plants were chosen randomly for the measurements of metric characters related to the external morphology of the taxa and the average values used for statisti...

The Carrizal Formation, exposed in the Marayes-El Basin (western Argentina), has been focus of palaeobotanical studies since late 1800s. recent finding well-preserved palyno­logical assemblages provides first detailed about its palynofloras. In this paper, 63 taxa identified unit are illustrated and discussed, as well their stratigraphic distribution equivalent palynological Argentina. Some spo...

nonea medik. is a genus of the boraginaceae tribe boragineae, with approximately 35 species worldwide. examination of their palynological characters supported the separation of taxa, which is usually based on morphological and micromorphological reproductive features. pollen grains of 10 taxa representing three groups of taxa in iran, the n. caspica group, the n. persica group and the n. lutea ...

Palynomorphs are one of the few groups fossils that provide biostratigraphic control in marine to nonmarine rocks and can be applied as proxies for paleoenvironmental paleoclimatic interpretations. Their utility is enhanced by their microscopic size, which usually less than 200 micrometres; they thus easily recovered from small rock samples. They occur throughout Phanerozoic therefore invaluabl...

Several recent dendrochronological, macrofossil and palynological studies have surveyed modern spruce forests at multiple locations in the Nain region of coastal Nunatsiavut (north-central Labrador) order to reconstruct past forest composition, growth rates, species diversity harvesting patterns. The present paper synthesizes original previously collected data evaluate extent which dynamics reg...

In contrast to paleogeography and evolutionary geography, landscape science is only a few decades old. This paper traces the history of paleogeographic research and, on this basis, development methodology methods science. country, began with reconstruction vegetation cover based edaphic approach. Later, such work started be integration palynological data reconstructions climatic changes. Actual...