Early angiosperm diversification: evidence from southern South America

In this report, we analyze the angiosperm fossil record (micro- and megafossil) from the central and southern basins of Argentina, southern South America, deposited between the late Barremian (128.3 Ma) to the end of the Coniacian (85.8 Ma). Based on this analysis, three major stages in the evolutio...

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Detalles Bibliográficos
Autores principales: Archangelsky, Sergio, Barreda, Viviana Dora, Passalia, Mauro G., Gandolfo, Maria, Prámparo, Mercedes, Romero, Edgardo Juan, Cúneo, Rubén, Zamuner, Alba Berta, Iglesias, Ari, Llorens, Magdalena, Puebla, Gabriela G., Quattrocchio, Mirta, Volkheimer, Wolfgang
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Naturales
Cretaceous
Angiosperm evolution
Eudicots
Southern South America
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/165859
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:In this report, we analyze the angiosperm fossil record (micro- and megafossil) from the central and southern basins of Argentina, southern South America, deposited between the late Barremian (128.3 Ma) to the end of the Coniacian (85.8 Ma). Based on this analysis, three major stages in the evolution of the angiosperms in the southernmost region of South America are established as follows: the late Barremian– Aptian, the latest Aptian-earliest Albian, and the middle Albian- Coniacian. The comparison between our fossil data set and those from Australia, North America, Asia and Europe suggest that the evolution and diversification of the angiosperms at mid and high latitudes in both hemispheres occurred roughly synchronously.

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