Paleoenvironmental significance of stromatolites in the Americus Limestone Member (Lower Permian, Midcontinent, USA) 

https://kuscholarworks.ku.edu/handle/1808/3771
Title: Paleoenvironmental significance of stromatolites in the Americus Limestone Member (Lower Permian, Midcontinent, USA) 
Author(s):
Larry E. Denver, Roger L. Kaesler
Paleo Publication Type:
KU Paleontological Contributions
Publication Format:
Journal article
Year of publication:
1992