Megacerops, Allops, Symborodon. 621 



'6489.f dispar, Marsh — {4617); Osborn, Le, fOligocaen. med. 

 1902, p. 98; Hatclier, Anu. Carnegie Mus., Dakota. 



I, 1901. p. 256, f. p. 257; 1902, p. 347, 

 pi. 16—18. 



validus (Brontops), Marsh, 1891. » 



6490. f avus, Marsh — {4598); Osborn, 1. c, fOligocaen. Dakota. 



1902, p. 99. 

 ■6491.tco!oradensis, Leidy — {4605); Osborn, fOligocaen. Dakota. 

 1. c, 1902, p. 99. 



americanum, p., Cope (nec Leidy). » 



6492.f angustigenis, Cope — {4602); Osborn, fOligocaen. Canada. 

 ' 1. c, 1902, p. 99. 



sycei'cis, Cope — {4619 part). ■» 



•6493.f selwynianus, Cope — (4603); Osborn, fOligocaen. Canada. 

 1. c, 1902, p. 99. 



6494. f bicornutus, Osborn, 1. c, 1902, p. 99, fOligocaen. med. 

 100, fig..5. Dakota. 



6495.f tichoceras, Scott et Osb. — (4612); fOligocaen. Super. 

 Osborn, 1. c, 1902, p. 99. Dakota. 



6496.f marshi, Osborn, 1. c, 1902, p. 100, 101, fOligocaen. Super, 

 fig. 6. Colorado. 



trigonoceras, p., Osborn, 1. c, 1896, » 



p. 181, fig. 5. 



■6497.f robustus, Marsh — {4616); Osborn, 1. c, fOligocaen. Super. 

 1902, p. 101. Colorado, Nebraska. 



1172. f Allops, Marsh, 1887. 



f Diplodonus, Marsh, 1890. 

 Marsh, Amer. Journ. Se, 1887, 34, p. 331. 



6498. f serotinus, Marsh — {4613a); Osborn, fOligocaen. Super. 

 Bull. Amer. Mus., 1902, p. 102. Dakota. 



6499. f crassicornis, Marsh, Am. Journ. Se, 1891, f Oligocaen. Super. 

 42, p. 268; Osborn, 1. c, 1902, p. 102. Dakota. 



■6500.f amplus, Marsh — {4614 part.); Osborn, fOligocaen. Super. 

 1. c, 1902, p. 102, f. 7 (Diplodonus). Dakota. 



1173. f Symborodon, Cope, 1873; Osborn, 1902. 



Anisacodon et Diconodon, Marsh, 1875 — 1876. 

 Cope, Pal^ont. Bull. No 15, 1873, p. 2. 



•6501.f torvus, Cope — {4615 part.); Osborn, fOligocaen. Super. 

 Bull. Amer. Mus., 1902, p. 103. Colorado, Dakota, 



Nebraska. 



