Published online by Cambridge University Press: 05 June 2013
This chapter deals with the trace fossils, also called ichnofossils, preserved in
the lower Estancia La Costa Member of the Santa Cruz Formation (late Early
Miocene) along the Atlantic coast, between the Río Gallegos and
Río Coyle, Santa Cruz Province, Argentina. The succession is mostly
composed of fluvial deposits. Extensive overbank areas record trace fossils in a
variety of deposits such as floodplain water bodies and paleosols that developed
under variable climatic conditions. From bottom to top, it records a general
trend of paleosol development from humid to drier climatic conditions, with
waterlogged areas developed in the middle portion of the succession. Floodplain
water bodies record
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