TYPE SPECIMENS OF INVERTEBRATE FOSSILS 19 



A vaoceras --Continued 



wellsense Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O.. et al., 1944: p. 43, pi. 8, figs. 1, 2. 

 Holotype and paratype 109448, 109449 



Powell Horiz. ? Tennessee 



Baeopleuroceras 



incipens Williams 



Cooper, G. A., and Williams, J. S., 1935: p. 852, pi. 60, figs. 24, 27. 

 Holotype 89758 



Tully Fm., Westbrook Mbr. New York 



Barrandeoceras 



cf. B. natatov (Billings) 



Ulrich, E. O., et al., 1942: p. 32, 33, pi. 10, figs. 4, 5; pi. 25, figs. 



2, 3; text-fig. la. 

 Figured specimen (thin section not 



located: pi. 25, fig. 3) 101366 



Chazyan Boulder in Mystic 



Conglomerate Quebec, Canada 



Bassleroceras 



bridgei Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O., et al., 1944: p. 36, pi. 6, fig. 6. 

 Holotype 109440 



Roubidoux Horiz. Virginia 



dalevillense Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O., et al., 1944: p. 37, pi. 6, figs. 1, 2. 

 Holotype 109441 



Cotter Horiz. Virginia 



lasallense Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O., et al., 1944: p. 38, pi. 5, figs. 5, 6. 

 Holotype 109442 



Shakopee Dol. Illinois 



? tenuiculum Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O., et al., 1944: p. 40, pi. 7, figs. 9, 10. 



Holotype 116611 (109443 in text: 



error) 

 Smithville Fm. Arkansas 



