/ 













L 



eJn. 





Alaska. 



pine. 



Southwestern 

 Alaska. 



j 

 Southeastern 

 Alaska. 



Yukon Valley and 

 Northern Alaska. 





Pset 

 otj 

 an 











Pseudo- 

 monotis 

 ochotica 

 in the 

 Crimea. 



Calcareous shale with 

 Pseudomonotis sub- 

 eireularis. 



Jpper limestone at 

 Hamilton Bay with 

 Pseudomonotis. 



Pseudomonotis zone 

 of the Yukon River 

 and Arctic Moun- 

 tains. 



tone 

 tt. 



Cherts (fossils not 

 known). 



H--™ 







Coral limestone of 

 Iliamna Lake. 



? Limestone of Gra- 

 vina Island (corals).' 



.« with Tropites 

 ullatus. 



Hi 





Limestones of Her- 

 ring and Hamil- 



Limestone of Yu- 

 kon, F i r t h, and 



th Trachyceras 

 oides. 



ton Bays with ^ t "h "ifalobia Tf! 

 H i^„ bl ^n superba.Clionites, 

 perba,etc. brachiopods, etc. 





D 



1 



s with Trachy- 

 ,s aon. 



Limestone near; 

 Hamilton Bay 

 with Dawsonites 

 (not found in 

 place). 







8 with Trachy- 

 rchelaus. 





iin beds with 

 eras reitzii. 



A 











Slates of Brooks 

 Mountain with 

 Iiaonella and Ce- 

 ratites (Gymnoto- 

 ceras). 



tones of Han 

 ;, Bakony, and 

 Schrey Alps, 

 Ceratites tri- 

 ms. 



u 

 o 



m 

 c3 

 <B 

 C 



a 



pa 

 3 



m 



& 



O 



OG 



T3 

 (B 



pa 



odosus beds in 

 uth Alps. 





If of Ismid, in 

 Minor. 











ibites beds in 

 Albania. 



c 





pil beds with 

 [tea cassianus. 



Prof 

 of 



SOI 



eds with Pseu- 

 onotis elarai. 



















