Antoine, Pierre-Olivier Amber from western Amazonia reveals Neotropical diversity during the middle Miocene - Washington, D.C. National Academy of Sciences September 2006 - pp. 13595-13600 ilus. Subjects--Topical Terms: ARACHNIDAHEXAPODAMIOCENO Subjects--Geographic Terms: IQUITOSLORETOPERU Subjects--Index Terms: FORMACION PEBAS