Twenty years ago one of our most prominent Iowa scientists, Mr. Frank Springer, announced the discovery of a typical Lower Burlington fauna at Lake Valley, in southern New Mexico. A year ago I had occasion to state before this Academy that this Lake Valley limestone is of wide extent. Now, at Lake Valley there exists beneath the limestones carrying he abundant crinoids of the Lower Burlington a massive, yellow, magnesium limestone very much like the Chouteau limestone of Missouri, and beneath this green and then black shales in all respects like the Kinderhook shales at Burlington. Beneath this section there is in southwestern New Mexico and southeastern Arizona a limestone formation which is highly fossiliferous, and which carries the common fossils, many forms which we are very familiar with in Iowa. The most abundant forms are those unique types which collectively are known as the Lime Creek fauna, now famous the world over through the discussions and descriptions of Professor Calvin.
Proceedings of the Iowa Academy of Science
©1906 Iowa Academy of Science, Inc.
Keyes, Charles R.
"Lime Creek Fauna of Iowa in Southwestern United States and Northern Mexican Region,"
Proceedings of the Iowa Academy of Science, 13(1), 197-198.
Available at: https://scholarworks.uni.edu/pias/vol13/iss1/24