Amsden, T. W. (1968). Articulate brachiopods of the St. Clair Limestone (Silurian), Arkansas, and the Clarita Formation (Silurian), Oklahoma. Journal of Paleontology. 42 (Supplement to Number 3, Part II of II): 1-117.
475095
Amsden, T. W.
1968
Articulate brachiopods of the St. Clair Limestone (Silurian), Arkansas, and the Clarita Formation (Silurian), Oklahoma