In connection with a casual reference to the cenological features of Central Iowa mention may be made to the recent discovery in the drift at Des Moines of a mass of rather soft ferruginous sandstone charged with fossils of unmistakable cretaceous type, the greater part being in a good state of preservation. When first discovered the mass was perhaps two feet in diameter and contained upwards of a dozen species of fossils. A few of the best preserved specimens were taken at the time; and the place revisited a few days later for the purpose of securing the entire piece, but unfortunately, workmen had removed it. The species obtained were: Otodus appendiculatus Agassiz, Lamna texana Roemer, Fasciolaria culbertsoni Meek & Hayden, Lunata concinnia, Meek & Hayden.
Proceedings of the Iowa Academy of Sciences
©1890 Iowa Academy of Science, Inc.
Keyes, Charles R.
"Eastern Extension of the Cretaceous in Iowa,"
Proceedings of the Iowa Academy of Science, 1(Pt. 2), 21-21.
Available at: https://scholarworks.uni.edu/pias/vol1/iss2/9