TYPE-SPECIMENS OF FOSSIL VERTEBRATES. 45 



3066. Mastodon floridanus Leidy. Type. 



Posterior portion of last left lower molar, associated with 



first and second left upper molars, probably of the same 



individual. Pliocene. Williston, Levy County, Florida. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1886, p. 11.— Leidy and Lucas, 

 Trans. Wagner Free Inst. Sci. Phila., IV, 1896, p. 15, pi. 1, figs. 

 1, 3; pi. 5, fig. 4. 



3057. Mastodon floridanus Leidy. Plesiotypes. 



Teeth of various individuals. Pliocene. Williston, Levy 

 County, Florida. 



Leidy and Lucas, Trans. Wagner Free Inst. Sci. Phila., IV, 1896, 

 p. 15, pis. 1-7. 



(See also catalogue numbers 3058-3065, 3067, 3069-3081, 

 3083-3085, 3101, 3110, 3115.) 



209. Mastodon mirificus Leidy. Type. 



Portion of left lower jaw containing last molar. Loup Fork 

 (Upper Miocene). Fort Niobrara, Niobrara River, Ne- 

 braska. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1858, p. 10; Journ. Acad. Nat. 

 Sci. Phila. (2), VII, 1869, pp. 249, 396, pi. 25, figs. 1, 2. 



426. Mastodon obscurus Leidy. Type. 



Posterior half of last molar. Pliocene ? Tarboro, North 

 Carolina. 



Leidy, Journ. Acad. Nat. Sci. Phila. (2), VII, 1869, pp. 247, 396, pi. 

 , 27, fig. 16. 



2346. Mastodon productus Cope. Type. 



Nearly complete lower jaws containing fifth and sixth molars 

 of each side and two tusks. ' ' Loup Fork " (Miocene). 

 New Mexico. 



Cope, Proc. Acad. Nat. Sci. Phila., 1874, p. 221; Rept. U. S. Geogr. 

 Surv. W. 100th Merid., IV, Pt. II, 1877, p. 306, pi. 70, figs. 1, 

 2; pi. 71, fig. 3. 



4168 Mastodon productus Cope. Plesiotypes. 



to Teeth and bones of various individuals. ' ' Loup Fork ' ' 



4173. (Miocene). Near Ildefonso, New Mexico. 



4 X 79- Cope, Rept. U. S. Georgr. Surv. W. 100th Merid., IV, Pt. II, 1877, p. 



306, pi. 71, figS, I, 2, 4-9; pi. 72, figS. 2-2d. 



4261. Megacerops brachycephalus Osborn. Type. 



Skull. White River (Oligocene). Bad Lands, between 

 Cheyenne and White rivers, South Dakota. 



Osborn, Bull. Amer. Mus. Nat. Hist., XVI, 1902, p. 97. 



4258. Megacerops brachycephalus Osborn. Paratype. 



Osborn, Bull. Amer. Mus. Nat. Hist., XVI, 1902, p. 97, text figs. 3, 4. 

 See Brontops dispar. 



4941. Megacerops dispar (Marsh). Type. 



Osborn, Bull. Amer. Mus. Nat. Hist., XVI, 1902, p. 98. 

 See Brontops dispar. 



