SciELO - Scientific Electronic Library Online

 
vol.13 número2Microplancton Silúrico de la Formación Cachipunco (sierra de Santa Bárbara; Cuenca Andina Central), Jujuy, ArgentinaEl registro de maderas fósiles de Leguminosae de Sudamérica índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Bookmark


Revista del Museo Argentino de Ciencias Naturales

versión On-line ISSN 1853-0400

Resumen

KIHN, Romina G; MARTINEZ, Dina E  y  GOMEZ, Eduardo A. Depredation of Quaternary ostracods from southern Buenos Aires province, Argentina. Rev. Mus. Argent. Cienc. Nat. [online]. 2011, vol.13, n.2, pp. 175-182. ISSN 1853-0400.

The presence of fossil traces in ostracods valves from different quaternary palaeoenvironments in southern Buenos Aires province, Argentina, are studied in this paper. A number of 12500 specimens were analyzed and a total of 33 bored valves were separated. Two types of depredation fossil traces were determined: Oichnus simplex Bromley and Oichnus paraboloides Bromley, which comprised more than 60% of the total boreholes. The highest percentage of valves with evidence of predation (3.33%) was registered in sediments of a continental permanent lagoon with favourable trophic conditions and high density of ostracods. There was not relationship between the borehole diameter and the size of the predated valves. Evidences of depredation were registered in species with smooth valves as well as in species with adorned valves.

Palabras llave : Ostracods; Fossil traces; Depredation; Quaternary; Argentina.

        · resumen en Español     · texto en Español     · pdf en Español