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| Pérez Loinaze,Valeria. |
| Well preserved Mississippian palynological assemblages have been obtained from the Cortaderas Formation in the Río Blanco Basin, northwestern Argentina. In this second contribution, twenty- eight from a total of seventy-eight spore species are described. A new species of trilete spores is proposed: Densosporites scalabrinii sp. nov. Worldwide geographic and stratigraphic records of taxa are analysed. The Cortaderas Formation is dated as late Viséan in age based on the presence of species of potential stratigraphic relevance, such as Reticulatisporites magnidictyus Playford and Helby, Verrucosisporites quasigobbettii Playford and Helby and Rugospora australiensis (Playford and Helby) Jones and Truswell and the absence of pollen grains. The samples collected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argentina; Cortaderas Formation; Mississippian; Palynology; Systematics. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142008000200014 |
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| Amenábar,Cecilia R.; Di Pasquo,Mercedes; Carrizo,Hugo A.; Azcuy,Carlos L.. |
| Palynological analysis of the Chigua and Malimán formations of Middle Devonian and Mississippian age respectively, is presented. They crop out in the Del Volcán Range at the Río Blanco Basin in western Argentina. In this second part, 40 indigenous species of cavate, pseudosaccate and cingulizonate spores from both units are illustrated. The species Geminospora sp. cf. G. tuberculata var. tuberculata McGregor is recorded in the Middle Devonian of South America for the first time. The following species are also recorded in the Mississippian of South America for the first time as Crassispora invicta Playford, Densosporites asperus Braman and Hills, Densosporites gracilis Smith and Butterworth, Densosporites secundus Playford and Satterthwait, Densosporites... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Palynology; Chigua Formation; Malimán Formation; Middle Devonian; Mississippian; San Juan Province; Argentina. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142007000300005 |
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