UPPER CRETACEOUS MULTITUBERCULATA 109 



Included Species 



1889. Cinwhtuys bdlus, Marsh, Amer. Jour. Set. (3) XXXVIII, 84. Type: Y.P.M. No. 11778, 



isolated M'-. Not figured. 

 1889. Cimolodon nitidus, Marsh, Amer. Jour. Sci. (3) XXXVIII, 84. Type: Y.P.M. No. 



1 1776, isolated Mj. Fig'd, Marsh 1889A, PL II, figs. 5-8. 

 1889. Cimolomys digona, Marsh, Amer. Jour. Sci. (3) XXXVIII, 177. Type: Y.P.M. No. 



1 1779, isolated M,. Fig'd, Marsh 18895, PI. VII, figs. 1-4. 

 1892. Cimolodon parvus. Marsh, Atner. Jour. Sci. (3) XLIII, 254. Type: Y.P.M. No. 11777, 



symphysis of lower jaw with incisor. Fig'd, Marsh 1892A, PI. VI, fig. 4. 

 1892. Cimolodon agilis, Marsh, Amer. Jour. Sci. (3) XLIII, 255. Type: U.S.N.M. No. 2132, 



fragment of lower jaw with Mj. Fig'd, Marsh 1892A, PL VI, fig. 8. 

 1889. Nanomys minutus, Marsh, Amer. Jour. Sci. (3) XXXVIII, 85. Type: Y.P.M. No. 



11855, isolated Mo. Fig'd, Marsh 1889A, PI. II, figs. 9-12. 

 1889. Halodon serratus, Marsh, Amer. Jour. Sci. (3) XXXVIII, 87. Type: Y.P.M. No. 11811, 



isolated P4. Fig'd, Marsh 1889A, PL III, figs. 14-17. 

 1889. Hdodon formosus, Marsh, Amer. Jour. Sci. (3) XXXVIII, 179. Type: Y.P.M. No. 



11812, isolated P^. Fig'd, Marsh 1889B, PL VIII, figs. 36-39. 

 1889. Allacodon lentus, Marsh, Amer. Jour. Sci. (3) XXXVIII, 178. Type: Y.P.M. No. 



1 1758, upper premolar. Fig'd, Marsh 1889B, PL VIII, figs. 22-26. Doubtfully included. 

 1889. Allacodon fumilus, Marsh, Amer. Jour. Sci. (3) XXXVIII, 179. Type: Y.P.M. No. 



10372, upper premolar. Not figured. Doubtfully included. 

 1892. Allacodon fords, Marsh, Amer. Jour. Sci. (3) XLIII, 255. Type: U.S.N.M. No. 2137, 



upper premolar. Fig'd, Marsh 1892A, PL VII, fig. 4. Doubtfully included. 

 1892. Allacodon rarus, Marsh, Amer. Jour. Sci. (3) XLIII, 256. Type: U.S.N.M. No. 2144, 



upper premolar. Fig'd, Marsh 1892A, PL VII, fig. 5. Doubtfully included. 



The originals of the following figures are thus included in this broad species: 



Marsh 1889A, PI. II, figs. 1-12. 



PI. Ill, figs. 14-17- 

 1889B, PI. VII, figs. 1-4, 13-16. 



PI. VIII, figs. 17-39. 

 1892A, PI. V, fig. I. 



PI. VI, figs. 1-2,4,6-9. 



PI. VII, figs. 3-5- 



These specimens certainly include several quite distinct species and possibly two 

 or more closely related genera. I f the discovery of good associated material ever per- 

 mits a real revision, it will be possible to use many of Marsh's names. At present, how- 

 ever, direct comparison is impossible in so many cases that the validity or invalidity 

 of the various names cannot be determined and they cannot be given separate defini- 

 tions. Since all these forms are apparently closely related, Cimolomys gracilis, sensu 

 lato, does name a morphological and taxonomic unit, although this unit is much larger 

 than a species in the modern sense of the word. 



