Anahuac Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Tertiary
 ....Anahuac Formation
RTLouisiana
 Texas
 lower Miocene
 upper Oligocene
SNUpper Oligocene or lower Miocene. Louisiana and Texas. Indexed with ages as applicable. Added to Thesaurus in 1985.