INVESTIGADORES
BREA Mariana
artículos
Título:
Una nueva especie fosil del género Araucarioxylon Kraus 1870, emend. Maheshwari 1972 del Triásico de Agua de la Zorra, Uspallata, Mendoza, Argentina
Autor/es:
BREA, M.
Revista:
AMEGHINIANA
Editorial:
ASOCIACION PALEONTOLOGICA ARGENTINA
Referencias:
Lugar: Buenos Aires; Año: 1997 vol. 34 p. 485 - 496
ISSN:
0002-7014
Resumen:
Petrified wood of a new species of Araucarioxylon has been described from Triassic sediments of Agua de la Zorra, Uspallata, Mendoza province, Argentina. The description of this fossil is based on anatomically preserved stems. The secondary xylem shows conspicuos growth rings. Pitting on the radial and tangencial walls of the tracheids is bordered. Rays are low, uniseriate. Three to nine bordered pits are present in the cross fields. The comparisons of these fossils with an other conifers stems and their paleoclimatic evidence are also analyzed.
