New Acritarches from the Early Devonian (Late Gedinnian) Haragan Formation of Oklahoma, U.S.A.

Abstract

Three distinctive new genera of acritarchs, microplankton of probable algal origin, are described from the Early Devonian (Late Gedinnian) Haragan Formation of Oklahoma. Ozotobrachion includes two new species: O. dactylos (type species) and O. dicros. Fimbriaglomerella (type species, F. divisa) and Riculasphaera (type species, R. fissa) are both, for the present, monotypic.