Description
Item Description:"Revision of nonmarine Lower Cretaceous ostracode genera from the Black Hills, and description of two new genera and four new species. On the basis of this revision, the Lakota Formation is considered to be pre-Aptian in age."
Physical Description:1 online resource (iv, 24 pages, 8 unnumbered pages of plates) : illustration, map.
Bibliography:Includes bibliographical references (pages 20-22) and index.