340 NEW YORK STATE MUSEUM 



1880 Ueber einige ostpreussische Silur-cephalopoden. 



Zeitschr. d. deutsch. geol. Gesellsch. 32:371-93, Tafel 

 XVI-XVIII. 



1 881 Schroder, H. Beitrage zur Kenntniss der in ost- und west- 



preussischen Diluvial-Geschieben gefundenen Silur- 

 Cephalopoden. Schriften der phys.-oekon. Gesellsch. 

 in Konigsberg. 1881. Bd 22. 

 1881 Whitfield, R. P. Observations on the Purpose of the Em- 

 bryonic Sheaths of Endoceras and their Bearing on the 

 Origin of the Siphon in the Orthocerata. Am. Mus. Nat. 

 Hist. Bui. V.I, no.i, p.20. 



1883 Dawson, J. W. Palaeontological Notes I. A New Species 



of Piloceras. Can. Nat. n. s. 10:1-4. 



1884 Hyatt, Alpheus. Genera of Fossil Cephalopods. Bost. See. 



Nat. Hist. Proc. 22:253-338. ij 



1886 Whitfield, R. P. Notice of Geological Investigations along 



the Eastern Shore of Lake Champlain, Conducted by 

 Prof. H. M. Seeley and Pres. Ezra Brainerd, of Middle- 

 bury College, with Descriptions of the New Fossils Dis- 

 covered. Am. Mus. Nat. Hist. Bui. v.i, no.8. 



1887 Holm, Gr. Ueber die innere Organization einiger silurischen 



Cephalopoden. Pal. Abhandl. von Dames & Kayser. 

 3:11-27. 



1888 Foord, A. H. Catalogue of the Fossil Cephalopoda in the 



British Museum, pti. 

 1888 Blake, J. F. Remarks on Shell-growth in Cephalopoda. Ann. 

 & Mag. Nat. Hist, ser.6. i : 376. 



1893 Hyatt, A. Phylogeny of an Acquired Characteristic. Am. 



Phil. Soc. Proc. 32:349. 



1894 Clarke, J. M. Nanno, a New Cephalopodan Type. Am. 



Geol. 14:205. 

 1894 Bather, F. A. Cephalopod Beginnings. Nat. Sci. 5:422-36. 

 (See his references) 



1894 Sardeson, F. W. Note on Nanno. Am. Geol. 14:402. 



1895 Holm, G. Om de endosifonala bildningarna hos familjen i 



Endoceratidae. Geol. For. Forh. i Stockholm. 17:601. 



