INVESTIGADORES
OLIVO Mariana Soledad
artículos
Título:
Tempskya in the Valanginian of South America (Mulichinco Formation, Neuquén Basin, Argentina) ? Systematics, palaeoclimatology and palaeoecology
Autor/es:
MARTÍNEZ, LEANDRO C. A.; OLIVO, MARIANA S.
Revista:
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 219 p. 116 - 131
ISSN:
0034-6667
Resumen:
New specimens of the tree fern Tempskya are described from the Mulichinco Formation (Valanginian), Neuquén
Basin, Argentina. Tempskya is a genus for permineralized false fern trunks. This extinct genus had a wide
distribution during the Early Cretaceous. However, records from the Southern Hemisphere are scarce and
restricted to the late Early Cretaceous in Argentina and Australia. The Patagonian specimens here described
from the Valanginian represent the oldest record of this genus. The presence of this fossil fern implies humid
and warm climatic conditions during the deposition of the Mulichinco Formation in the Early Cretaceous. The
new specimens show petioles, leaf remains, sporangia and spores. On the basis of these new features, a new
systematic position for Tempskya is suggested.