Leaf imprints from the La Ollita Formation (Miocene), Valle del Cura, Cordillera Frontal, San Juan province, Argentina. A monospecific collection of leaf imprints is described. This set belongs to one freshwater angiosperm species corresponding to the Hydrocharitaceae, so that this family must have formed part of the aquatic vegetation in water bodies probably entailing the Paranense sea.
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