Descriptions and illustrations of many common [Cretaceous] fossils.
*Adkins, W. S. (1928) Handbook of Texas [Cretaceous] fossils: Univ. Texas Bull. 2838.
Lists all fossils described from the Texas [Cretaceous] prior to 1928, with many useful illustrations.
*Adkins, W. S., and Winton, W. M. (1919) Paleontological [correlation] of the Fredericksburg and Washita formations of north-central Texas: Univ. Texas Bull. 1945.
Contains descriptions and illustrations of many common Lower [Cretaceous] fossils of north-central Texas.
Clarke, W. B., and Twitchell, M. W. (1915) The [Mesozoic] and [Cenozoic] Echinodermata of the United States: U. S. Geological Survey Monograph 54, Washington, D. C.
A valuable guide to the [Mesozoic] and [Cenozoic] echinoderms of Texas.
*Frizzell, D. L. (1954) Handbook of [Cretaceous] Foraminifera of Texas: Univ. Texas, Bureau Econ. Geol. Rept. Inves. No. 22.
A technical, but invaluable aid in the study of Texas [Cretaceous] microfossils.
*Girard, R. M. (1959) Bibliography and index of Texas geology, 1933-1950: Univ. Texas Pub. 5910.