Nuevos registros de maderas del Mioceno de la Formación Solimões, Cuenca de Acre, Amazonia, Brasil

ADAMI-RODRIGUES, KAREN; KLOSTER, ADRIANA; GNAEDINGER, SILVIA

REVISTA BRASILEIRA DE PALEONTOLOGIA

SOC BRASILEIRA PALEONTOLOGIA

Año: 2017 vol. 20 p. 383 - 404

1519-7530

ABSTRACT ? NEW WOOD RECORDS OF THE MIOCENE OF THE SOLIMÕES FORMATION, ACRE BASIN, AMAZONIA, BRAZIL.New fossil wood records associated to the families Lecythidaceae, Calophyllaceae, Combretaceae and Arecaceae for the Miocene of theSolimões Formation, Acre Basin, Brazil, are described. The specimens have been collected on the banks of the Juruá and Envira rivers. Themain anatomical characters that allowed relating the specimens to these families are tangential diameter and distribution of vessels per mm2,parenchyma type, intravascular pits and types and sizes of rays. It is the first record of Carinianoxylon brasiliense Selmeier, Calophyloxyloneoionophyllum Prakash and Awasthi, Terminalioxylon erichensii Mussa and Palmoxylon Schenk for formation; in addition, a new speciesfor the genus Lecythioxylon Milanez is described. Systematic comparisons have been made with the other fossil records of these families inother Gondwana formations. The paleoflora of the Solimões Formation analyzed here shows a great richness of taxonomic groups, reasonwhy this work provides new and important data for the knowledge of the paleoflora of the Amazon region.