Carter, John Lyman. Mississippian brachiopods from the Chappel limestone of central Texas. - Ithaca, N.Y., Paleontological Research Institution, 1967. - 254-488 p. illus., map. 23 cm. - Bulletins of American paleontology, v. 53, no. 238 . Bibliography: p. 442-448. LCCN: gs 67000137 Subjects--Topical Terms: Brachiopoda, Fossil.Paleontology--Mississippian.Paleontology--Texas. LC Class. No.: QE796 / .C34 Dewey Class. No.: 564/.8/09764