. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 16G BULLETIN : MUSEUM OF COMPAllATIVE ZOOLOGY. as " of flat-iron shape, with tlie broad end to the south resting upon the Kansas-Nebraska line. The northern limit is probably in the vicinity of Eoca, Lancaster County. On the east the boundary has only been approximated, . . but it is supposed that it extends from Roca south and east into Johnston County, thence southward through the western end of Pawnee County into Kansas. The western boundary, from Roca to Beatrice, is also buried beneath a very thick bed of lo
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 16G BULLETIN : MUSEUM OF COMPAllATIVE ZOOLOGY. as " of flat-iron shape, with tlie broad end to the south resting upon the Kansas-Nebraska line. The northern limit is probably in the vicinity of Eoca, Lancaster County. On the east the boundary has only been approximated, . . but it is supposed that it extends from Roca south and east into Johnston County, thence southward through the western end of Pawnee County into Kansas. The western boundary, from Roca to Beatrice, is also buried beneath a very thick bed of loess, but from Beatrice southward it is traced with considerable ; An under- standing of the stratigraphic relations of the Upper Palaeozoic rocks in. GEOLOGICAL MAP o r SOUTH-EASTERN RASKA COAL MiAsunca. PERMIAN /E^ VAKOTA CROue Fig. L A Geological Map of Southeastern Nebraska (after Knight). Nebraska will be facilitated by an inspection of the accompanying sketch-map and section, taken from Professor Knight's article, and of the following table of formations. The stratigraphy of the Kansas Coal Measures is described in the report of the University Geological Survey of Kansas, particularly in Volume III. by E. Haworth. Nearly all of the fish-remains described in the present paper are from the Atchison shales, the principal localities being in Cass, Gage, Lancaster, Nemaha, and Sarpy counties. According to Dr. Barbour, the exposures at Cedar Creek, Louisville, South Bend, and Table Rock. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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