Robuta

https://www.usgs.gov/publications/late-eocene-impact-microspherules-stratigraphy-age-and-geochemistry Late Eocene impact microspherules: Stratigraphy, age and geochemistry | U.S. Geological Survey Recent discoveries of microtektite and related crystal bearing microspherule layers in deep-sea sediments of the west equatorial Pacific DSDP Sites 292, 315A... late eocene https://www.usgs.gov/publications/paleoecological-evaluation-late-eocene-biostratigraphic-zonations-west-coast Paleoecological evaluation of Late Eocene biostratigraphic zonations on the west coast | U.S.... No abstract available. https://mapress.com/pe/article/view/palaeoentomology.8.5.11 A new extinct species of Phloiotrya Stephens (Coleoptera: Melandryidae: Dircaeini) from late Eocene...