TY - RPRT TI - Oligocene age of the classic Belén fruit and seed assemblage of north coastal Peru based on diatom biostratigraphy AU - Steven R. Manchester AU - Fabiany Herrera AU - Elisabeth Fourtainer AU - John A. Barron AU - Jean-Noel Martinez PY - 2012 DO - 10.1086/665797 UR - https://pubs.usgs.gov/publication/70048040 ID - 70048040 ER -