Devonian Foraminifera: Part 1, The Louisiana limestone of Missouri and Illinois,
by James E. Conkin and Barbara M. Conkin.
- Ithaca, N.Y., Paleontological Research Institution, 1964.
- 54-105 p. illus., map, diagrs., tables. 24 cm.
- Bulletins of American paleontology, v. 47, no. 213 .