We found no fossils in upper Niobrara except the bands of Ostrea congesta crowded on flattened Inoceramus sp. Just as they occur between Boulder and Left Hand Creeks . The basal limestone contains large numbers of Inoceramus deformis covered with Ostrea congesta , some of them (the Inoceramus ) quite large. At the next cut through the Niobrara the shales are badly involved in places vertical, and a small stream cuts through the entire series of lower Pierre, in which I found only three poorly preserved Inoceramus barabini . In an exposure of Pierre nearly east of the SE point of the upper Niobrara there are many specimens of Baculites ovatus and Inoceramus barabini , usually poorly preserved, though I found one or two of the latter in good state of preservation. I found one limestone lens about two or three feet in diameter from which had weathered many specimens of small Baculites
Page:Field Notes of Junius Henderson, Notebook 1.djvu/54
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Field_Notes_of_Junius_Henderson%2C_Notebook_1.djvu/page54-1024px-Field_Notes_of_Junius_Henderson%2C_Notebook_1.djvu.jpg)