174 



INDEX 



Femur, 59,* 60. 

 Fenestra, parietal, 24, 34. 

 fenestratus (Pentaceratops), 111, 112.* 

 Fibula, 61.* 



flabellatus (Triceratops), 121, 122. 



flexus (Centrosaurus), 28,* 31,* 36,* 41,* 43,* 44,* 46,* 

 49,* 50,* 53,* 54,* 55,* 58,* 59,* 61,* 62,* 86, II, 

 III. 

 Flora of dinosaur environment, 20. 

 Footprints, 64. 

 Fossa, preorbital, 32. 

 Fossa, supratemporal, 34. 

 Fox Hills formation, 6. 

 Frill, see crest. 

 Fruitland formation, 6. 



Ceratopsian species in, 8, 26, 27, 108. 

 Genera and species, Alphabetical List of, 1 9. 

 Geological sequence of Ceratopsia, 8. 

 Gilmore, C. W., 1, 72, 90, 95, 97, 99. 

 gladius (Torosaurus) , 28,* 132, XVI. 

 Gorgosaurus, 23. 



gracilis (Leptoceratops), 78, 79, 80,* 81. 

 Granger, W., 1, 74, 76. 

 Gregory, W. K., 74. 



Gregory, W. K. and Mook, C. C, 75, 76, 77. 

 Hatcher, J. B., 1, 62, 73, 82, 119, 126, 127. 

 hatcheri (Diceratops), 28,* 126. 

 Hay, O. P., 25. 

 Hayden, F. V., 3. 

 Hell Creek beds, 3, 6. 



Ceratopsian species in, 14, 29, 111, 117, 119, 123, 

 129. 

 Horn, nasal, 30. 

 Horn, supraorbital, 30. 

 horridus (Triceratops), 28,* 116, XIII. 

 Huene, F. v., 18, 32, 99. 

 Humerus, 53,* 54. 

 Hyoid, 37, 38.* 

 Ilium, 47,* 49,* 5 7. 

 Integument, 66, 69, 70. 

 Ischium, 58.* 

 Jaw, lower, 37. 

 Judith River formation, 3, 5. 



Ceratopsian species in, 8, 26, 29, 82, 83, 96, 109. 

 Jugal, 33. 



kaiseni (Chasmosaurus), 28,* 94, 95,* V, VII. 

 Kindle, E. M., 1. 

 Kirtland formation, 6. 



Ceratopsian species in, 8, 111. 

 Lacrymal, 33. 



Lacrymal foramen, see preorbital fossa. 

 Lambe, L. M., 83, 84, 87, 91, 92. 

 Lance formation, 6. 



Ceratopsian species in, 8, 26, 27, 28, 109, 110, 116, 

 117, 119, 120, 121, 122, 123, 125, 126, 128, 

 130, 132. 

 Lane, H. H., 1. 



latus (Torosaurus), 28,* 130, 131,* 132, XV. 

 Leptoceratops, 24, 26, 76, 78, 98. 



gracilis, 78, 79, 80,* 81. 

 longirostris (Anchiceratops), 28,* 104, 105, 106, X. 

 Lower Ravenscrag formation, 13. 

 Lull, R. S., 126. 



Manus, 56,* 57. 



Marsh, O. C, 1, 114, 116, 117, 120, 121, 122, 123, 128, 



130, 132. 

 Matthew, W. D., 20. 

 Maxillary, 33. 



maximus (Triceratops), 129, 130. 

 Mexico, 18. 

 Mivart, St. George, 65. 

 Mongolia, 5, 18, 74. 



Monoclonius, 1, 5, 26, 29, 74, 81, 85, 86, 88, 89, 91, 92, 

 96-101, 103, 108, 130. 



crassus, 3, 30, 40-45, 47, 48, 49, 51, 54, 58, 59, 60, 



61, 81,82, 83, 96, 102. 

 dawsoni, 30, 83, 84, 91, 102. 

 fissus, 3, 8 1. 



recurvicornis, 3, 81, 83, 97. 

 sphenocerus, 3, 30, 37, 81, 82, 83, 90, 91. 

 Monoclonius belli, 92. 

 Montana, ceratopsian species in, 13, 78, 82, 90, 96, 97, 



117, 119, 123, 129. 

 montanensis (Brachyceratops), 97, 98, 99, IX. 

 montanus (Ceratops), 96. 

 Moodie, R. L., 2, 131. 

 Morosaurus, 52. 

 Morphology, general, 30-73. 

 Mounted specimens, 64, 65, 66. 

 Nasal, 32. 

 Nasal septum, 32. 



nasicornus (Centrosaurus), 43,* 45,* 86, IX. 

 New Mexico, 4. 



Ceratopsian species in, 16, 108, 111. 

 Niobrara County, Wyo., 3, 6. 



Ceratopsian species in, 15, 29, 116. 

 Nopcsa, F., 58, 60. 



North Dakota, ceratopsian species in, 14. 

 obtusus (Triceratops), 28,* 125, 126.* 

 O'Harra, C. C, 1. 

 Ojo Alamo formation, 6. 

 ornatus (Anchiceratops), 103. 

 Osborn, H. F., 1,71, 108, 109, 1 10. 

 ovatus (Styracosaurus), 90. 

 Palatal aspect of skull, 35, 36,* 67.* 

 Parasaurolophus, 82. 

 Parietal, 34. 



Parks, W. A., 1, 38, 106, 107, 108. 

 Pathologic bone, 107, 111, 121, 127, 131,* VII. 

 Pelvis, 48. 



Pentaceratops, 4, 5, 6, 39, 66, 74, 77, 94, 95, 98, 101, 

 103, 108, 130. 



fenestratus, 110, 111, 112,* 127. 

 sternbergii, 27, 28,* 108, 109,* 110, V. 

 Pes, 62,* 63. 

 Phrynosoma, 3 1 . 

 Phylogeny, 24, 28.* 

 Polyonax mortuarius, 3. 

 Postfrontal fontanelle, 25-26, 

 Predentary, 37. 

 Premaxillary, 32. 



prorsus (Triceratops), 28,* 117, 118, 119. 

 Protoceratopsidae, 24, 74, 75. 

 Protoceratops, 2, 5, 24, 26, 39, 74, 79, 100, 110. 

 andrewsi, 74, 75,* 76, 77,* 78, 80,* 81, IV. 

 restoration of, frontispiece. 



