264 
PALEONTOLOGICAL GEOLOGY 
urged by Davis, Marbut, Griswold and others.^ It was their 
opinion that the antiquity of the Ozark elevation could not pos¬ 
sibly have been greater than Mid or Late Tertic date. 
Fossils from the now well known Devonic remnants in the New- 
burg neighborhood, in Phelps County, were familiar objects in 
Missouri collections so long ago as 1890, when they were obtained 
in quantity by the State Survey. A few years later Prof. E. M. 
Shepard also fully described ^ the Devonic rocks on the Ozark 
divide near Springfield. 
Even more convincing is the evidence that all members of the 
Mississippian series once completely mantled the Ozark uplift. 
From Wright, Douglas and Ozark counties on the very top of the 
dome abundant fossils characterizing the Louisiana limestone, and 
the Hannibal shales were made known by Shumard ^ so early as 
1855. Burlington crinoids were also collected ^ by the same in¬ 
vestigator in Ozark County in 1855. 
With the recent Greger identification of a Spergen fauna in 
Dade County an Early Carbonic member hitherto unrecognized in 
southwestern Missouri is recorded. 
Lithostrotion canadense and Oligoporus multiporus as well as 
other characteristic forms which occur so abundantly in outliers 
in Dade County and elsewhere over the elevated tract of southwest 
Missouri amply attest the former existence of the St. Louis lime¬ 
stone over the entire Ozark region.® 
Many years ago Prof. C. G. Broadhead collected a quantity of 
fossils on Blancett Mountain, near the south Missouri boundary. 
These were identified with typical Kaskaskia forms by E. O. 
Ulrich and myself.® A score of species were specifically re¬ 
ferred. This is believed to be the westernmost record of Kas¬ 
kaskia sedimentation in the Mississippi Valley. 
So the recent Greger collections add new localities on the Ozark 
crest for late Paleozoic fossils and again call attention to the 
significant fact that not only are the post-Cambrian formations 
not absent over the back of the dome, but that all of the late 
Paleozoics which are so well developed in concentric escarpments 
around the base of the uplift are also present in remnantal patches 
1 Science, N. S., Vol. VII, p. 589, 1898. 
2 Missouri Geol. Surv., Vol. XII, p. 65, 1898. 
3 Missouri Geol. Surv., Kept. 1871, p. 206, 1873. 
4 Ibid., p. 191. 
5 American Geologist, Vol. XVI, p. 89, 1895. 
6 American Geologist, Vol. XVI, p. 89, 1895. 
