12 KANSAS ACADEMY OF SCIENCE. 



A PRELIMINARY LIST OF FOSSILS FOUND IN RILEY 



COUNTY. 



BY S. C. MASON, DELPHOS, KANSAS. 



The rocks of Riley county belong to the Permo-Carboniferous series, and 

 many of them furnish an abundance and variety of fossils not exceeded any- 

 where in the State. Many specimens have been found, the names of which 

 have not yet been determined. These will be referred to in their proper 

 places, in connection with the species which are clearly defined. 



Prof. St. John has kindly named for me several specimens which I could 

 not find described in any works to which I had access. 



SUB-KINGDOM PROTOZOA. 



(Foraminifera.) 



1. Fusilina cylindrica, abundant. 



2. F. robusta, abundant. 



SUB-KINGDOM RADIATA. 



(Polypi.) 



3. Rhomhopora lepidodendroides, common. 



4. A smaller species, similar, not named, very rare. 



5. Fistulipora nodulijera, abundant. 



6. Lophophyllum proliferum, occasional. 



ECHINODERMATA. 



7. Erisocrinus typus, occasional basal plates. 



8. Zeacrinus mucrospinus, occasional radial spines ; also a great variety 



of plates and stems of species not determined. 



9. Archaeoseidaris triserrata, spines. 



10. Plates and spines of two species not determined. 



SUB-KINGDOM MOLLUSKA. 



(Polyzoa.) 



11. Fenestella shumardi, occasional. 



12. Synodadia biserialis, occasional. 



13. Polypora sp. undetermined, rare. 



BRACIIIAPODA. 



14. Lingula sp. undetermined, occasional. 



15. Productus costatus, occasional. 



16. P. semireticulatus, common. , 



17. P. symmetricus, common. 



18. P. longispinus, common. 



19. P. praitenianus, common. 



20. P. Nebrascensis, occasional. 



21. Chonetes verneniliana, occasional. 



