Some years since a portion of supposed fossil wood was obtained from an eighteen inch limestone layer about six or eight feet below the Geode bed. It was secure by Mr. S. J. Wallace and placed in the rooms of the Keokuk Library Association. A brief mention was made of it in a letter to the editors of the American Journal of Science and Arts, as noted in the May issue of 1878
Most who examined the rocks along the Missouri River in the region under consideration have been con...
The section is located on the line of the Wabash railway about two miles below the little station of...
Workmen digging a well at the elevator during April, 1896, came to a forest bed at a depth of eighty...
Outside the region covered by this paper, the most notable exposure of this formation occurs at Craw...
I handed in the subject of this paper, intending to throw together various notes which have been acc...
A very prominent outcrop of the Otis limestone occurs along the valley of Indian creek at a point kn...
While making a study of the Keokuk beds in southeastern Iowa during the field season of 1911, the wr...
While on a hasty visit to Jackson county, Iowa, this summer, I was taken, by the kindness of Hon. C....
The wide celebrity of the fern-bearing concretions from the Carboniferous beds of Mazon Creek, Illin...
At the time of the meeting of the Iowa Academy of Science at Drake University, Des Moines, in April,...
The record of this well is of special importance because it supplements and corrects the published r...
The sandstones under consideration lie in old gorges in Devonian limestone a short distance north of...
Six species of Agaricocrinus obtained from the Keokuk beds, of which three, viz: A. americanus Roeme...
When Louis Agassiz delivered, at the University of Iowa, in 1867, his now famous lectures on Ancient...
The sandstone of Redrock, in Marion County, Iowa, has long attracted popular attention. The bright v...
Most who examined the rocks along the Missouri River in the region under consideration have been con...
The section is located on the line of the Wabash railway about two miles below the little station of...
Workmen digging a well at the elevator during April, 1896, came to a forest bed at a depth of eighty...
Outside the region covered by this paper, the most notable exposure of this formation occurs at Craw...
I handed in the subject of this paper, intending to throw together various notes which have been acc...
A very prominent outcrop of the Otis limestone occurs along the valley of Indian creek at a point kn...
While making a study of the Keokuk beds in southeastern Iowa during the field season of 1911, the wr...
While on a hasty visit to Jackson county, Iowa, this summer, I was taken, by the kindness of Hon. C....
The wide celebrity of the fern-bearing concretions from the Carboniferous beds of Mazon Creek, Illin...
At the time of the meeting of the Iowa Academy of Science at Drake University, Des Moines, in April,...
The record of this well is of special importance because it supplements and corrects the published r...
The sandstones under consideration lie in old gorges in Devonian limestone a short distance north of...
Six species of Agaricocrinus obtained from the Keokuk beds, of which three, viz: A. americanus Roeme...
When Louis Agassiz delivered, at the University of Iowa, in 1867, his now famous lectures on Ancient...
The sandstone of Redrock, in Marion County, Iowa, has long attracted popular attention. The bright v...
Most who examined the rocks along the Missouri River in the region under consideration have been con...
The section is located on the line of the Wabash railway about two miles below the little station of...
Workmen digging a well at the elevator during April, 1896, came to a forest bed at a depth of eighty...