Branson — The Fauna of the Residuanj Auburn Chert. 



51 



Hudson 

 River 

 Period 



o o 

 SO 



T3 

 I" 



a 



o 



'Eb 



o 



G 



'3 



a 

 o 



'£b 



41 



rt 



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 CO 



o 



fl 

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C 

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Gastropoda — Con'rf 



Bellerophon capax Ilrich 



Bucania halli U. and S 



Eotomaria dryope Billings 



Hcleionopsis sp. iindet 



Helicotoma missouriensis n. sp. . . . 

 Helicotoma tennesseensis Safford. . 



Holopea insignis U. and S 



Hormntoma fasciatn n. sp 



Hormotoma gracilis v. sublaxa Hall 

 Hormotoma latiangularis n. sp. . . . 



Liospira micula Hall 



Liospira progone Billings 



Liospira n. sp 



Lophospira fillmorcnsis Ulrich .... 



Lophospira obliquua Ulrich 



Lophospira oweni V. and S 



Lophospira perangidata Hall 



Lophospira saffordi LTlrich 



Pterotkeca expansa Emmons 



Pterotheca sp. imdet 



Strophostylus iextilis U. and S . . . . 



Cephalopoda 



Cyrioceras billingsi Salter . 



Cyrioceras sp. undet 



Orthoceras bilineatum Hall 

 Orthoceras sociale Hall. . . . 



Trilobita 



Bathynrus spiniger Hall 



Bumastus trentonensis Emmons. . . 

 Ceraurus pleurexanthemus Green. . 



Isotelus iowensis D. D. Owen 



Pterygometopus lincolnensis n. sp. . 

 Pterygomelopus intermedins Clarke 

 Ptychopyge sp. undet 



OSTRACODA 



Primitia n. sp 



Primilia n. sp 



Relationships uncertain 



Technophorus bellistriatus n. sp. . . 



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 



UL 

 B 



B 



TULR 

 BT ST 



SBT 

 BU 



S 



X 



B 



UL 



S 



S 



ST 



S 

 T 



S 

 T 



B 



BT 



B 



B 

 BT 



T 



BT 



T 



BT 



BT 



B-H 



