Branson—The Fauna of the Residuary Auburn Chert. 
51 
Trenton Period 
Stones River 
Group 
Black River 
Group 
Trenton 
Group 
Utica 
Hudson 
River 
Period 
Group 
Richmond 
Group 
Cincinnati Region 
Tennessee Region 
New York Region 
Canada Region 
GASTROPODA—Con’d 
Bellerophon capax Ulrich........ 
Bucanea halli U. and S.......... 
Eotomaria dryope Billings........ 
Helcionopsis sp. undet.......... 
Helicotoma missouriensts n. sp.. 
Helicotoma tennesseensis Safford. . 
Holopea insignis U. and S....... 
Hormotoma fasciata n. sp........ 
Hormotoma gracilis v. ‘Abiees aie 
Hormotoma latiangularis n. sp. . 
Lnospira micula Hall............ 
Liospira progone Billings........ 
EMOTE We ss Sask 
Lophospira fillmorensis Ulrich... . 
Lophospira obliquua Ulrich...... 
Lophospira owent U. and §8...... 
Lophospira perangulata Hall...... 
Lophospira saffordt Ulrich....... 
Pterotheca expansa Emmons...... 
Pterotheca sp. undet............ 
Strophostylus textilis U. and S.... 
CEPHALOPODA 
Cyrtoceras billingst Salter........ 
Cyrtoceras sp. undet............. 
Orthoceras bilineatum Hall....... 
Orthoceras sociale Hall........... 
TRILOBITA 
Bathyurus spiniger Hall......... 
Bumastus trentonensis Emmons.. . 
Ceraurus pleurexanthemus Green. . 
Isotelus towensis D. D. Owen.. 
Pterygometopus lincolnensis n. sp.. 
Pterygometopus intermedius Clarke 
Ptychopyge sp. undet............ 
OsTRACODA 
Peweha n. 6p. .......-........: 
Se WS ee ee es 
Relationships uncertain. 
xX X 
Technophorus bellistriatus n. sp.. 
xX 
xX 
xX 
me 
ST 
Hm 
BT 
BT 
