WHITEAVES.] LARAMIE AND CRETAOEDUS INVERTEBRATA. 85 



Inoceramus pboblematicds, Schlotheim. 



Ostraciks labialu^, Schlotheim. 1813. Bronn's .Jahrbueh, vol. VII., p. 93. 

 Mytilit's probkmalicus, Schlotheim. 1S20. Petrjefactenk., vol. I, p. 302. 

 -Vytiloidr.-< lahiatus, Bron-niart. 1822. Cuv. Oss. fos.s., pi. 3, fig. 4, in GeoL des 



env. de Paris. 

 Inoceramus mytiloid,:.^, Mantell. 1822. Geol. of Sussex, p. 21.5, pi. 27, fig. 2, and pi 

 28, fig. 2. 

 '■ Sowerby. 1823. Min. Conch., vol V, p. (12, pi. 442. 



" Goldfuss. 1836. PetiT<?faet. Germ., vol. II., p. 188, pi. 113, 



fig. 4. 

 Inoceramu.-' probhmaticw, d'Orhiany, 1^45. Pal. Franc, Terr., Cret., vol. Ill, p. 

 •510, pi. 40(i. Meek and Hayden, 18.57. Proc. Ac. Nat, 

 Se. Phil, vol. IX., p. ll<i. 

 / Inoctramux jiseudomytiloides, Schiel 1855. Pacific Railway lieports, vol.11., 



p. 108, pi. 3, fig. 8. 

 Jnoremmus laUatus, Stoliczka. 1871. Pal. Indira, vol. III., Cret. Pelecyp. S. 



India., p. 408, pi. 29, fig. 1. 

 Tiwccramus problematiffus, Meek. 1876. Eep. U. S. Geol. Surv. Terr., vol IX, p. 62, 

 pi. 9, figs. 3, a, b. 



Mill Creek, at mill we.--t of Fort McLeod, in thin pieces of brittle and 

 fissile shale, G. M. Dawson, 1881, and T C.Weston, 1883: a few perfect 

 but flattened single valves. Dr. Dawson informs the writer that these 

 Inoeerami from Mill Creek come from a band of dark shales in the dis- 

 turbed foot hill region. These shales, however, immediately overlie 

 or underlie a series of sandstones which hold plants apparently iden- 

 tical with those of the Dakota Group. It is probably in the continua- 

 tion of the same band of shales that the fossils from the entrance to 

 the North Kootamie Pass came. 



Characteristic specimen of the typical I. problematicus have also been 

 recognized in pieces of a drab or yellow-grey limestone collected by 

 Ml-. J. W. Spencer in 1874 on the Swan Eiver, N. -w. T. 



Pholadomya paptracea, Meek and Hayden. 



Pholadomya papyracea, Meek and Hayden. 1862. Proc. Ac. Nat. Sc. Phil., vol. 

 XIV., p. 27. 

 " " Meek. 1876. Rep. U. S. GeoL Surv. Terr., vol. IX., p. 



217, pi. 5, figs. 4, a, b. 



North West branch of North Fork of the Old Man Eiver, about four 

 miles below the mouth of Oyster Creek, G. M. Dawson, 1883 : one 

 specimen. 



