Validite D'Orbitolina subconcava Leymerie, 1878

A detailed revision of the type localities of a new species, Orbitolina subconcava, described by A. Leymerie, has permitted the authors to demonstrate the invalidity of this taxa. As a result of R.C. Douglass' work (3), O. subconcava LEYM. sensu SCHROEDER (4)–(6)] must be a junior synonym of Orbitolina (Mesorbitolina) texana (ROEMER, 1852); however the previous investigations of R.C. Douglass (3) should be confirmed by a further revision of the type material of F. Roemer.