Glossopteris occidentalis white emended: geographic and biostratigraphic implications
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چکیده
منابع مشابه
(Eucynodontia, Tritheledontidae) from the Late Triassic of southern Brazil: anatomical and biostratigraphic implications
The tritheledontid Riograndia guaibensis was the first cynodont described for the “Caturrita Formation” fauna from the Late Triassic of southern Brazil (Santa Maria 2 Sequence). The type materials did not preserve anatomical information regarding braincase, occiput, basicranium, zygomatic arch, postdentary bones and craniomandibular joint. Here new materials are described and supply the missing...
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Botrychiopsis has been considered an important floristic element of Westphalian/Artinskian associations of the Paraná Basin. The occurrence of Botrychiopsis in roof-shales of the Rio Bonito Formation in Southern Paraná Basin (Quitéria area), supported by the identification of Botrychiopsis valida, enlarges the genus biochron. Consequently, the stratigraphic hierarchy for Botrychiopsis plantiana...
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Gene flow, and resulting degree of genetic differentiation among populations, will shape geographic genetic patterns and possibly local adaptation of parasites and their hosts. Some studies of Plasmodium falciparum in humans show substantial differentiation of the parasite in locations separated by only a few kilometers, a paradoxical finding for a parasite in a large, mobile host. We examined ...
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متن کاملNegro-White Differences In Geographic Mobility
The geographic mobility of workers in the United Xtates was the subject of a study issued by the Universify of Michigan Survey Research Center in 1966.’ The major findings of the study were the subject of an article in the March issue of the Bulletin; the foZZowing article, abo drawn from the study, outlines Negro-white differences in this important mechanism of economic adjustment and suggests...
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ژورنال
عنوان ژورنال: Revista Brasileira de Paleontologia
سال: 2010
ISSN: 1519-7530
DOI: 10.4072/rbp.2010.1.04