220 Kansas Academy of Scieyice. 



at the Corral, and where the rock is concretionary they are 

 quite rare, apparently having been destroyed by the processes 

 which developed the concretions. Near Smolan the rock is 

 almost an iron ore and would pass for a fossilif erous hematite. 

 Parts of the rock at this locality are so full of fossils that it is 

 a true fossil coquina with the shells replaced by iron oxid and 

 cemented by the same substance. This is the most fossil- 

 iferous lacality that was seen. 



The most eastern point where Mentor fossils have been col- 

 lected is in northeastern Marion county, about half way be- 

 tween the villages of Lehigh and Waldeck. The rock was not 

 seen in place, but was found lying in the road ditches, and con- 

 sisted of soft red fossiliferous sandstone. The ditches were 

 cut in unfossiliferous yellow sandstone like that seen else- 

 where beneath the fossil-bearing beds, and similar beds occur on 

 the Rock Island right of way near the station of Waldeck. The 

 most northern locality for Mentor fossils is in section 18 of 

 Cambria township. Saline county. This is about seven miles 

 north of Salina, and the fossils occur in loose blocks lying on 

 the slope. Below the fossil-bearing rocks outcrop gray to 

 brown friable shales and sandstones, while above them are 

 brown unfossiliferous sandstones. Gould states that Unios 

 and other fresh-water shells have been found here (14:33). 

 The writer did not succeed in finding any fresh-water shells. 

 Professor Mudge reported shells from the "Dakota" of Clay 

 county. 



Other localities from which Mentor fossils have been ob- 

 tained are near Windom, near the western margin of McPher- 

 son county, northeastern Rice county, southeastern Ellsworth 

 county, near Brookville, Bavaria, southeast of Lindsborg, and 

 many places in Saline county, where the Comanchean is shown 

 on the map. 



THE CENTRAL KANSAS COMANCHEAN FAUNAS. 



The collections have not yet been submitted to careful study, 

 and until that has been done little will be said relating to cor- 

 relation. The evidence appears fairly clear, however, that the 

 strata are of upper Comanchean or Washita age. The lists of 

 species which follow have largely been compiled. From the 

 Kiowa have been collected the species which are named in the 

 first list. Other species in addition to those named appear to 

 be present, but identifications have not yet been made. 



