CICYTTP 12500
CENTRO DE INVESTIGACION CIENTIFICA Y DE TRANSFERENCIA TECNOLOGICA A LA PRODUCCION
Unidad Ejecutora - UE
artículos
Título:
Fossil woods from late Pleistocene sediments from the El Palmar Formation, Uruguay Basin, Eastern Argentina
Autor/es:
MARIANA BREA; ALEJANDRO ZUCOL; NOELIA PATTERER
Revista:
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amterdam; Año: 2010 vol. 163 p. 35 - 51
ISSN:
0034-6667
Resumen:
The Santa Ana fossiliferous locality (Entre Ríos, Argentina) of the El Palmar Formation is located in the southernmost part of theUruguay Basin, in easternArgentina. It contains evidence of a late Pleistocene paleoflora, consistingmainly of fossilwoods. These remainswere studied and are described based on anatomicallypreserved secondary xylem. Two new morphospecies of Mimosoxylon Müller-Stoll et Mädel 1967 and Prosopisinoxylon Martínez 2010 are described, aswell as twonewmorphogenera, related to Holocalyx Micheli, 1883 andAmburana Schwacke et Taub. 1894. These two new morphogenera represent the first recorded fossil wood with affinity to Faboideae from the Uruguay Basin. Schinopsixylon heckii Lutz 1979, (Anacardiaceae) was also recognized. These fossil woods are discussed here in terms of floristic composition and palaeoclimatic requirements. The morphotypes described here, as well as previously recorded ones from the Uruguay Basin, increases our understanding of floral diversity during the late Pleistocene in this region.
