ESTUDIO DE UN BOSQUE DE LICOFITAS EN LA FORMACIÓN NUEVA LUBECKA, PÉRMICO DE CHUBUT, ARGENTINA. IMPLICANCIAS PALEOCLIMÁTICAS Y PALEOGEOGRÁFICAS
AbstractSTUDY OF A LYCOPOP FOREST IN NUEVA LUBECKA FORMATION, PERMIAN OF CHUBUT, ARGENTINE. PALAEOCLIMATIC AND PALAEOGEOGRAPHIC IMPLICATIONS. - A palaeoecological, palaeoenvironmental and palaeobotanical analysis allowed to define conditions of development of an arborescent Lycopod forest that occupied a vast Fluvial floodplain where hydrophylous and hydro-hygrophylous biotopes were prevailing. The absence of Stigmaria-like appendages -characteristic of ecuatorial belt arborescent Lycophytes- suggest different ecological conditions, whereas this type of root system developed in swampy soils, our plants prohably grew (at least in the plantiferous section considered) in more crusty and harder soils, with enough water. Palaeoclimatic and palaeogeographic considerations were carried out taking into account the anatomic structure of other known lycophytes. In this regard, the relationship of these plants with very benign climates (moderated to subtropical) was established. This fact would be in agreement with the last theories about the clearly more equatorial position of the possible Patagonic Plate during the early Permian.
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