INVESTIGADORES
DEL FUEYO Georgina Marisa
artículos
Título:
Triassic wood from the Gordon Valley,Central Transantarctic Mountains, Antarctica
Autor/es:
GEORGINA M. DEL FUEYO, EDITH L. TAYLOR, THOMAS N. TAYLOR &RUBÉN CÚNEO
Revista:
IAWA JOURNAL
Editorial:
Rijksherbarium/Hortus Botanicus of Leiden University
Referencias:
Lugar: Leiden; Año: 1995 vol. 16 p. 111 - 126
ISSN:
0928-1541
Resumen:
Wood from an in situ permineralized forest from the Middle Triassic
of Gordon Valley (Queen Alexandra Range, central Transantarctic Mountains) in
Antarctica is described as a new taxon. Approximately 100 trunks in growth
position are present at the site; they range from 13-61 cm in diameter and suggest
that some of the trees were up to 20
m tall. Pits in the radial walls of the tracheids are of
the abietinean type. Rays are uniseriate and 1-9 cells high; cross fields
include one to two pits that appear to be simple. Axial parenchyma is absent.
Pith and cortex are not preserved. The Antarctic wood is compared with existing
fossil wood types from Antarctica and other parts of Gondwana. Although the
fossil wood shares a number of characteristics with the Podocarpaceae, it
differs from any existing genera and is described as a new taxon, Jeffeersonioqlon
gordonense.