Lower Cretaceous microfauna from Trinidad and adjacent areas. Howard Elwell Stacy 1966. A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the University of Michigan, 1966. You can download complete PDF version at / Puedes bajar la versión completa en PDF en: https://mariantoc.github.io/stratigraphy.html#StacyHE1966