Vicksburg Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Oligocene
 .....middle Oligocene
 ......Vicksburg Group
RTLouisiana
 Mississippi
 Texas
 Alabama
 Bucatunna Formation
 Byram Formation
 Florida
 Glendon Limestone
 Marianna Limestone
SNIncludes Marianna Limestone and Byram Formation. Gulf Coastal Plain.