Recently the writer published, in conjunction with Dr. W. H. Twenhofel, a short paper concerning certain Comanchean strata of Central Kansas. Because of the northern extension of these beds beyond the Kansas boundary it seems desirable to explain one of the criteria used in tracing the beds northward.
Proceedings of the Iowa Academy of Science
©1926 Iowa Academy of Science, Inc.
Tester, A. C.
"The Use of Cone-In-Cone Structure for the Purpose of Correlation,"
Proceedings of the Iowa Academy of Science, 33(1), 218-218.
Available at: https://scholarworks.uni.edu/pias/vol33/iss1/42