MEGASPORAS CRETACICAS DE LA FORMACION SPRINGHILL EN EL SUBSUELO DE ARGENTINA Y ·CHILE AUSTRAL
AbstractIn this paper sistematic descriptions of Cretaceous megaspores are presented. Specimens were obtained from drill cores in the Austral basin (or Magallanica), in Argentinian and Chile at depths of 1839 to 1959 m. Several species including Triletes gamerroi n. sp., Triletes sp., Paxillitriletes menendezii n. sp., Paxillitriletes magellanica n. sp., Minerisporites labiosus, were determined. In addition to the above mentioned megaspores, cuticle rests, seeds, sporangium and Dictyothylakos sp. (tridimentional net of probable algal origin) were identified. The specimens were studied and photographed with transmitted light and also via .Scanning Electron Microscopy. P. menendezii and T. gamerroi species were analyzed with the Transmission Electronic Microscope, detecting the microstructure and component membrane thickness.
How to Cite
Authors publishing in Ameghiniana have the option of making their article freely available online. Authors opting for the Open Access must pay a fee of $300 (US dollars) to cover article-processing costs and to ensure the article is made open access. Please contact the Production Team after the acceptance of your manuscript if you are interested in making your article Open Access. This option implies by default a license Creative Commons Attribution Non-Commercial-NoDerivs License (CC BY NC ND). If your funding institution requires a different licensing option please communicate this to the Production Team after the acceptance of your manusctipt.