Late Miocene palynological assemblages from Patagonia: continental and marine evidence

BARREDA, V.D.; GULER, M.V.; PALAZZESI, L.

Late Cenozoic of Patagonia and Tierra del Fuego

Elsevier

Lugar: Londres; Año: 2008; p. 343 - 350

The Neogene was a time of development of the present vegetation in southern South America. Early Miocene floras were modified by the addition of some taxa from northern South America (Euphorbiaceae Alchornea, Fabaceae Caesalpinoideae Caesalpinea, Malphigiaceae (Perisyncolporites pokornyi), mixing with those of the Australasian affinity (Escalloniaceae Quintinia, Fabaceae Mimosoideae Acacia, Casuarinaceae Casuarina, Goodeniaceae (Poluspissusites sp.)). Available data indicate that a marked contrast between coastal and inland communities was established by the Late Miocene. The pattern of changes of the Patagonian landscape was related to the restriction of forests to western lands and the wide spread of herbaceous and shrubby vegetation in extra Andean Patagonia.