INVESTIGADORES
PASSALIA Mauro Gabriel
artículos
Título:
ON THE PRESENCE OF THE CYCAD PSEUDOCTENIS DENTATA ARCHANGELSKY AND BALDONI IN THE PUNTA DEL BARCO FORMATION (LATE APTIAN), SANTA CRUZ PROVINCE, ARGENTINA
Autor/es:
PASSALIA, M.G.
Revista:
AMEGHINIANA
Editorial:
ASOCIACION PALEONTOLOGICA ARGENTINA
Referencias:
Lugar: Buenos Aires; Año: 2013 vol. 50 p. 257 - 264
ISSN:
0002-7014
Resumen:
The cycad leaf Pseudoctenis dentata has been recognized in floodplain deposits from the Aptian Punta del Barco Formation at Meseta Baqueró. This new record clearly differs from others cycad species of Baqueró Group P. ornata and P. crassa, by its cuticular features, and from P. giganteus by its size and leaflets shape. This new specimen extends the record of Pseudoctenis dentata from the Anfiteatro de Ticó to the Punta del Barco Formations, thus being present during the time of deposition of most of the Baqueró Group.The major differences between the new specimen of Pseudoctenis dentata and those previously described from the Cerro Bayo are found in its macromorphological physiognomy. Contrasting, their cuticles are virtually indistinguishable, remarking the importance of considering the role of cuticle in species determination of fossil leaves.
