http://worldcat.org/entity/work/id/15232348

Fossil Fresh-Water Mollusca from the State of Monagas, Venezuela

The following study is based on a collection of fresh-water invertebrate fossils from the State of Monagas, Venezuela. The material was collected in 1944 by Ely Mencher, Norman E. Weisbord, and Oswaldo De Sola of the Socony-Vacuum Oil Company, C. A., of Venezuela. Continental deposits in the State of Monagas of late Tertiary or Quaternary age are widespread and thick and have been described in various reports. With the exception of the description and illustration of a fossil naiad, Castolioides laddi, by Marshall from near Argua de Maturin, District of Piar, State of Monagas, no accounts of the molluscan fossils characteristic of these fresh-water sediments in Venezuela have been heretofore published. Carlotta J. Maury depicted a Hyria and Corbicula from strata of equivalent age in Trinidad.

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