Lower Pennsylvanian (Morrowan) crinoids from Arkansas, Oklahoma, and Texas 

https://kuscholarworks.ku.edu/handle/1808/3824
Title: Lower Pennsylvanian (Morrowan) crinoids from Arkansas, Oklahoma, and Texas 
Author(s):
Raymond C. Moore, Harrell L. Strimple
Paleo Publication Type:
KU Paleontological Contributions
Publication Format:
Journal article
Year of publication:
1973