PROSSER. | The Upper Permian. 59 
later proposed the name Geuda salt measures,! but which, how- 
ever, he subsequently withdrew in favor of the prior name of Ma- 
rion.? This is the highest formation of the Kansas Permian in which 
fossils have yet been found, and paleontologically the upper limit 
of the formation may be considered as defined by the disappear- 
ance of fossils. Only in the lower part of the formation have any 
Brachiopods been found, and then simply the one species, Derbya 
multistriata (M. & H.) Pros.,? the majority of the species being rather 
small Lamellibranchs characteristic of the Permian. The most 
abundant species are: | 
Pleurophorus subcuneatus M. & H. 
Pseudomonotis Hawni M. & H. 
Myalina permiana (Swallow) M. & H. 
Bakevellia parva M. & H. 
all of which are typical Permian species. From this formation the 
author has identified the following species: 
1. Pleurophorus subcuneatus M. & H. 
2. Pleurophorus subcostatus M. & W. 
3. Bakevellia parva M. & H. 
4. Yoldia subscitula M. & H. 
5. Macrochilina cf. angulifera White. 
6. Nautilus eccentricus M. & H. 
7. Schizodus curtus M. & W. 
8. Schizodus ovatus M. & H. 
9. Dentalium Meekianum Geinitz (?). 
10. Aviculopecten occidentalis (Sheem.) Meek. 
11. Myalina permiana (Swal.) M. & H. 
12, Pseudomonotis Hawni M. & H. 
13. Pseudomonotis Hawni M. & H. var. ovata M. & H. 
14. Pseudomonotis cf. variabilis Swal. 
Nuculana bellistriata Stevens var. attenuata Meek. 
Derbya multistriata M. & H. Pros. (?). 
. Septopora biserialis (Swal.) Waagen (?). 
18. Hdmondia Calhounit M. & H. 
1 FE. W. Cragin, Colorado College Studies, vol. VI, March, 1896, pp, 3, 9. 
38 American Geologist, vol. XVIII, August, 1896, p. 181. 
3 Professor Cragin reports Athyris subtilita in the Marion in southern Kansas 
(see Colorado College Studies, vol. VI, p. 18). 
a 
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