New data:
In recent years five wells have been drilled in the rearward areas of the Ouachita folded belt. These wells, under the old conception, should have encountered either pre-Cambrian rocks or the ordinary sequence of dark, steeply dipping, varyingly metamorphosed beds characterizing the Ouachita folded belt. Instead, these wells, under the normal thickness and facies of Mesozoic formations, found Paleozoic beds that showed no evidence of metamorphism, and that exhibited gentle dips in cores.

Conclusions:
It is suggested that Llanoria, instead of being a Paleozoic landmass of continental size separated from a northwestward continent by a narrow geosyncline, was simply a bundle of mountain ranges possessing long linear but limited lateral extent. It is further suggested that these mountains originated in a narrow geosyncline which formed in early Paleozoic time along the seaward belts of what had been the foreland of the northwestern continent. During their periods the mountains served as the source for clastic sediments in the geosyncline which they partly occupied.

It is believed that the presence of unmetamorphosed and largely clastic beds of Pennsylvanian and Lower Permian age in three explored areas south of the folded belt proves that a sea lay south as well as north of the mountains and that during these times, at least, the mountains shed clastics in both directions.

It is suggested that these sediments form a low-dipping wedge of Pennsylvanian and Lower Permian sediments on both flanks of the highly folded Ouachita belt. It is considered possible that this wedge of sediments has economic significance.