The small brachiopod, Bilobites bilobus, was first described by Linnaeus in the 12th edition of his Systema Naturae in 1767. Though frequently reported since then from several Silurian horizons in both Europe and America this is the first occurrence in the Silurian of Iowa.
Proceedings of the Iowa Academy of Science
©1926 Iowa Academy of Science, Inc.
Thomas, A. O.
"The Occurrence of the Brachiopod Bilobites bilobus in the Silurian of Iowa,"
Proceedings of the Iowa Academy of Science, 33(1), 221-222.
Available at: https://scholarworks.uni.edu/pias/vol33/iss1/47