Geology and paleontology of Canal Zone and adjoining parts of Panama; description of Tertiary mollusks (Gastropods: Columbellidae to Volutidae)

Abstract

PLATE 39. Middle Eocene mollusks from Gatuncillo formation, late Eocene or early Oligocene mollusks from marine member of Bohio(?) formation, late Oligocene mollusks from Bohio formation, early Miocene mollusk from Culebra formation, and middle Miocene mollusks from Gatun formation. 40-43, 45. Middle and late Miocene mollusks from Gatun formation. 44