Table ok invertebrates found in the San Jorge Formation at different localities. 







o) ai p 

 ^-^ a 





0) 



^.-^<v 



O alfLi 



O 





aS 



.So 



Mo 



<J) o « 



a;~5 



«0< 



«« 





boo w 



° m ° 



o ^ aj^i 



sSS2 











h 







O 







<U V 





d 



50 





3 







O 



oco 







01 



■a 







■3 3 

 O 3 





» a 



•-J3 



MS 



MO 



tfo 



°g 



<U 3 



S-a 



3»2 



o»2 



050 



S5 * 



p>2 

 d5S 



Echinoidea. 

 Linthia joannis boehmi Opp. . 



Hemiaster sp 



Cyphosoma sp 



Vermes. 



Serpula sp 



Brachiopoda. 

 Bouchardia patagonica Ih. . . . 



Discina sp 



Terebratula sp 



Terebratella sp 



Cephalopoda. 

 Nautilus (Aturia) valencienni 



Hupe 



Nautilus roemeroi Ih 



Gastropoda. 

 Calyptrgea cf. pileolus d'Orb. 



(=aperta [Sol. ] Boehm) 



Natica sp 



Pseudotylostoma rosmeroi Ih 



Paludina sp 



Scalaria sp 



Turritella ameghinoi Ih 



' ' doeringi Boehm 



" aff. multistriata Reuss . 



' ' raalaspina Ih 



affinisMiill 



' ' chilensis Sow 



Melania cullia Ih.* 



Potamides patagonensis Ih 



Aporrhais patagonensis Ih. 



(=rocai Boehm) 



Aporrhais rothi Ih 



Aporrhais chubutensis Ih. 



{— stria tissima Ih.) 



Aporrhais cossmanni Ih 



' ' gregaria Wilck 



Struthiolaria prisca Ih 



ornata, var. den- 



sestriata Ih 



Cantharidus aff. striolatus Stol. . . 



Trophon sp 



Fusus sp. (fide Burckhardt) 



Siphonalia sp 



Bulla sp 



Pelecypoda. 

 Ostrea ameghinoi (rocana) Ih. . . . 



" hemisphterica d'Orb 



" neuquena Bi 



" rionegrensis Ih 



" claras Ih 



X. 



x. 



• X. 



X 

 .X. 



• X 



■ X. 



■x. 



X 



.(x)? 



.X 



• X. 



• X. 



X. 

 X 



X 



X 



X 



x. 



X 

 X 



.X 



.x. 

 x. 



X. 

 X 



x. 



.X 



• X, 



• X. 



• X, 

 .X. 



.X 

 .X 



• X 



X 



X 



X 



■ X. 

 .X. 



X 



.X 

 X 



X. 



x. 



X 

 X 

 X 



X 



X 



X 



.X 



* This form is uncertain; it seems that it proceeds from the strata beneath the San Jorge, the 

 Pehuenche Beds. 



