MICROFÓSILES CALCÁREOS NO MARINOS Y SEMILLAS DE LA FORMACIÓN PIEDRA CLAVADA (ALBIANO) EN SU ÁREA TIPO, PROVINCIA DE SANTA CRUZ, ARGENTINA

Authors

  • Sara Ballent
  • Ana Paula Carignano
  • Ari Iglesias
  • Daniel G. Poiré

Abstract

Se describen e ilustran por primera vez microfósiles calcáreos no marinos (ostrácodos y carofitas) y semillas de angiospermas primitivas asignadas a Carpolithus sp. de la Formación Piedra Clavada (Albiano temprano a Albiano tardío bajo) en su área tipo en la localidad Quebrada Don Nielsen, provincia de Santa Cruz, Argentina. La microfauna sugiere un ambiente de albufera pantanosa. Se establecen afinidades con asociaciones microfaunísticas del Cretácico Inferior de la Cuenca del Golfo San Jorge. Abstract. Non-marine calcareous microfossils (ostracods and charophytes) and primitive angiosperm seeds (Carpolithus sp.) from the Piedra Clavada Formation (early Albian to early late Albian) in its type area, at Quebrada Don Nielsen section, Santa Cruz Province, Argentina are described and illustrated for the first time. The microfauna suggests a marshy lagoon paleoenvironment. Affinities with Lower Cretaceous microfossil assemblages from the Golfo San Jorge Basin are included.

Author Biographies

  • Sara Ballent
    CONICET-Museo de La Plata, Facultad de Ciencias Naturales y Museo, Univ. Nacional de La Plata
  • Ana Paula Carignano
    CONICET-Museo de La Plata, Facultad de Ciencias Naturales y Museo, Univ. Nacional de La Plata
  • Ari Iglesias
    CONICET-División Paleobotánica, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Univ. Nacional de La Plata
  • Daniel G. Poiré
    CONICET, Centro de Investigaciones Geológicas, La Plata

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Published

2011-12-11

Issue

Vol. 48 No. 4 (2011)

Section

Articles

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How to Cite

MICROFÓSILES CALCÁREOS NO MARINOS Y SEMILLAS DE LA FORMACIÓN PIEDRA CLAVADA (ALBIANO) EN SU ÁREA TIPO, PROVINCIA DE SANTA CRUZ, ARGENTINA. (2011). Ameghiniana, 48(4), 541-555. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/419

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