356 



Triodopsis — Polygyrella 



Pars 18 



1912 



Holix adipis, Gockerell and Henderson (12a) BulL Amencan 



Mus. Nat. Hist. New York XXXI, p. 230—. 

 Vorkommen: U. Paleocfin, Thanetien: Puerco Beda: Na- 



c i m i e n t o (N. Mexico). 

 Bemerkung: Schlecht erhalten. Systematische Stellung 



daher durchaus fraglich. 



Trlodopsls dalll (White). 

 •1885 Helix (Monodon*) dallii, (Stearns, emeni), White, <85a) BuU. 

 U. S. Geol. Survey No. 18, p. 178 tab. III flg. 4-6. 

 1KA7 Holiv dillii Goooer, (87a) Bull. Cahfornia Acad. Sc. 1887, p.855. 

 \m Mosodof DaU^^t^arns: (94a) Proc U. S. National Museum 



wr MfiQfV^ n 743 

 1900 Polygyw» Dallii, Stoarns, (OOa) Proc. Washington Acad. Sci. II, 



p. 655, tab. XXXV, fig. 4— o. 

 1902 rolygyra Dallii, Stearns, (02a) Scicnce (New York) N. S. X\ . 



1905 HcUx^Monodon?) dallii, Schuchert, (05a) Bull. U. S. National 



Musoum, No. 53, pt. I, p. 307. M 



1906 Polvgyra Dallii, Stearns, (06a) Univorsity of Cahforma PubL 



Bull. of the Departm. of Geol. V, No. 3, p. 67 

 1912 Polygyra dallii, Cockerell and Ilenderson, (12a) Bull. Amencan 

 Muscum Nat. Hist. New York XXXI, p. 232. 

 Vorkommen: U. Miocan, Aquitauien: John Day Beds: 

 John Day (Oregon). 



Zeitliche Verbreitung der tertiaren Species des Genus Triodopsis 



SPECIES 



Pal 



n 



V 



■i. 



a 



ta 



a 

 f- 



eoc 



s 



*C 



<d 



C 



<3 



o. 



an 



a 



JU 

 •V 



a- 



>• 



E 



a 



V 



V 

 ■^ 



—■ 

 — l 



oca 



(Pr 



bou 



a 



a 

 o 



r 



ca 

 ea 



n 



ia- 

 en) 



f 



•a 

 a 

 — i 



Oli 



c 



Ci 



•c 



s* 

 a 

 o 

 H 



goc 



a 



o. 

 o 



DC 



an 



a 



s 



Jl 



a 



"5 



--) 



"S 



o" 

 •< 



M 

 P 



"5 



u 



TS 



a 

 0= 



OCt) 



(Vin 

 boo 



a 



»4* 



j> 

 «1 

 X 



n 



do- 

 cn) 



a 



JU 



a 

 o 



r 



o 



«- 



a 



a> 



a 

 g 



Pl 



1 



a 

 .— 



a 



o 

 a. 



iocj 



a 

 _«j 

 "o 



a 



V, 



ca 



in 



a 



B 



< 



1 ? adipis 









— 











— 















— 



— 







— 





1 (IhIIi 









— 



Genus Polygyrella Binney 1863. 109 ) 

 Genotyp: Polygyrella polygyrella Bland et Cooper. 



Subgemis Ammonitella Cooper 1869. 110 ) 

 Genotyp: Polygyrella (Ammonitclla) yatesi (Coopcr). 



Polygyrella (Ammonitella) lunata (Conrad). 

 •1871 Planorbis lunatus, Conrad, (71c) American Journ. of Conchology 

 VI, p. 315, tab. XIII, fig. 8. 



109 ) Smithsonian Misccllaneous Collections No.. p. 5. 

 uo ) Ameiican Journ. of Concliology TV, p 20fl. 



