Evidencias de lesiones foliares en plantas fósiles de dos yacimientos de la Patagonia argentina

Abstract

“Leaf lesions evidences in fossil plants in two deposits of Argentinian Pat- agonia”. Different types of lesions in fossil leaves collected in deposits of the Argentine Pat- agonia, at the localities of Bajo de La Leona (late Early Permian) and Laguna del Hunco (Early Eocene) in Chubut and Santa Cruz provinces, respectively, are presented here. In Permian leaf specimens were recognized non marginal feedings, skeletonizations, oviposition, bites and probable fungal spots, while in the Eocene species were identified marginal and non-marginal feedings, skeletonizations and fungal spots (one of them was confirmed by the presence of fungal spores associated with the sample). For both deposits the presence of possible orders of producers identified insect damage was inferred. An approximation of the vertical structure of the insect community responsible for the leaf damages was performed for the Permian de- posits.