##plugins.themes.bootstrap3.article.main##

Silvia N. Césari Marcela Remesal Claudio Parica

Resumen

Available data on Early Cretaceous Antarctic ferns, based on mega and microfossils from Cerro Negro Formation (Shetland Islands) in Livingston Island are evaluated, together with the information provided by recently collected fossils. Anatomically well preserved Osmundaceous stems are common in the fossil assemblage. The cyatheaceae are represented by fertile foliage with spores in situ and the first Antarctic petrified stems of this family are found in Cretaceous strata. Fertile structures support the presence of Marattiaceae in the flora. Spores of Lophosoriaceae and other families are present. This diversity suggests that ferns successfully inhabited these Antarctic areas during the Early Cretaceous, therefore at least warm, frost-free paleoclimatic conditions are proposed.KEY WORDS. Cretaceous. Antarctica. Cerro Negro Formation. Ferns.

##plugins.themes.bootstrap3.article.details##

Sección
Volumen Temático
Derechos de autor
Creative Commons License
Esta obra está bajo licencia internacional Creative Commons Reconocimiento-NoComercial 4.0.

Los autores conservan los derechos de autor y garantizan a la revista el derecho de ser la primera publicación del trabajo licenciado bajo una licencia CC Attribution-NonCommercial 4.0 que permite a otros compartir el trabajo con el reconocimiento de la autoría y de la publicación inicial en esta revista.