NOTES ON ARCTIC ORDOVICIAN AND SILURIAN 
CEPHALOPODS 
Chiefly fkom Boothia Felix — King William Land, Bache 
Peninsula, and Bear Island 
AUG. F. FOERSTE 
To Dr. Olaf Holtedahl we owe a number of very valuable 
papers bearing directly on American Arctic geology. In 1912 
he published his paper ^^On Some Ordovician Fossils from 
Boothia Felix and King William Land collected during the 
Norwegian Expedition of the Gj0a, Captain Amundsen, through 
the Northwest Passage’’ in the Videnskapsselskapets Skrifter, 
I, Mat-naturv. Klasse, 1912, No. 9. The fossil material of 
this expedition was collected by Lieutenant Godfred Hansen, 
the second in command. The fossils forming the subject of 
Dr. Holtedahl’s paper were collected at two localities. One of 
these was at Cape Christian Frederick on the west coast of 
Boothia Felix, Longitude 94° west and Latitude 69° 30' north, 
where collecting was done in September 1903. The other was 
somewhere on King William Land. It is known that in 1903 
Hansen collected fossils on the Pfeffer River on King William 
Land, about 20 miles west of Gj0a Harbor, where the expedition 
had wintered. This harbor is on the south coast of King William 
Land at Longitude 96° west. Unfortunately, on account of 
inadequate labelling, it is impossible now to determine from which 
of the two localities the various specimens under consideration 
were obtained. The fossils were identified by Dr. Holtedahl as 
Receptaculites oweni Hall, Halysites sp., Columnaria sp., with 
partly separated corallites, Maclurites sp., Eurystomites sp., 
Actinoceras heloitense (Whitfield), Actinoceras sp. (cf. tenuifilum 
Hall), and Gonioceras occidentale Hall (Holtedahl, Plate III. 
fig. I). This is a Black River fauna. Judging from the promi- 
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