186 U.S. NATIONAL MUSEUM BULLETIN 262 



Bactrites --Continued 



? smithianus --Continued 



Gordon, Mackenzie, Jr., 1964b: p. 104, 105, pi. 5, figs. 13, 14. 

 Hypotype 119021 



Imo Fm. Arkansas 



cf. B. tenuicinctum (Hall) 



Kindle, E. M., 1912: p. 107 



Described specimen (not located) 



Onondaga Fm. Virginia 



warthini Miller 



Miller, A. K., 1938: p. 38, 39, pi. 2. figs. 3-8, 10; pi. 35, fig. 9. 

 Syntypes 96548 A-D, 96549 



Antrim Fm. Michigan 



