Indiana, [365].
Inferior Oolite, [28].
Inoceramus concentricus, [402].
---------- Cuvieri, [401].
---------- shell perforated by Clionites, [403].
---------- sulcatus, [402].
Insectiferous Purbeck limestone, [556].
Insectivora, fossil, [812].
Insects, fossil, [547].