REPORT OF THE STATE PALEONTOLOGIST I903 34I 



1895 Hyatt, A. Remarks on the Genus Nanno. Am. Geol. i6:i. 



1896 Holm, G. Om apicalandan hos Endoceras. Geol. For. Forh. 



i Stockholm. 18:394. Also G. F. F. 1897. 19:175. 



1896 Verrill, A. E. The Opisthoteuthidae. A Remarkable New 



Family of Deep Sea Cephalopoda, with Remarks on Some 

 Points of Molluscan Morphology. Am. Jour. Sci. ser.4. 

 2 :74-8o. 



1897 Clarke, J. M. Lower Silurian Cephalopoda of Minnesota. 



Geol. Minn, v.3, pt2, p.760. 

 1897 Holm, Gr. Om ektosifo hos Endoceras Burchardii Dew. Geol. 



For. Forh. i Stockholm. 19:171-74. 

 1900 Hyatt, A. Cephalopoda; in Textbook of Palaeontology by 



Zittel, tr. by Ch. R. Eastman, i : 502. 



