Chapter M

Length of crown ·017
Depth of fang ·009
Height of crown ·011

Galeocerdo hartwellii, Cope.

Cret. Vert, p.. 244.

This species belongs to the group _G. Egertonii_, Ag., having the two edges subequal and symmetrical. A single tooth from Cement Gulch, Col.

_CESTRACIONTIDÆ._

"Two dorsal fins, an anal; nasal and buccal cavities confluent. Teeth obtuse, several series being in function." (Günther.)

Ptychodus, Ag.

Poissons Fossiles, t. iii., p. 56.

Ptychodus Whippleyi, Marcou.

Geology of North America, 1858, p. 33.

Represented by a tooth from the cretaceous of Cement Gulch, almost identical with the specimen described by Dr. Leidy from the cretaceous of Texas. (Cont. to Ext. Vert. Fauna, p. 300.)

SUMMARY.

MAMMALIA.

Primates 4
Carnivora 2
Perissodactyla 16
Artiodactyla (?) 1
Amblypoda 3
Rodentia 1
-- 27

AVES.

Incertæ sedis 4
-- 4

REPTILIA.

Crocodilia 6
Chelonia 5
-- 11

PISCES.

Teleocephali 3
Nematognathi 1
Cycloganoidei 6
Plagiostomata 3
Incertæ sedis 1
-- 14
--
Total 56

EXPLANATION OF PLATE A.

_Figure about one fourth natural size._

Uintatherium Leidianum.

EXPLANATION OF PLATE I.

_Figure three fourths natural size._

Palæosyops paludosus.

Posterior view of cranium.

EXPLANATION OF PLATE II.

_Figures one fourth natural size._

Palæosyops major.

Fig. 1.--Axis, view of right side.

Fig. 2.--Axis, anterior view.

Fig. 3.--Atlas, posterior view.

Fig. 4.--Atlas, anterior view.

Figs. 5 and 6.--Seventh cervical anterior and posterior view.

Figs. 7 and 8.--Anterior and posterior views of right tibia.

Figs. 9 and 10.--Proximal and distal faces of same.

Fig. 11.--Proximal end of fibula.

Fig. 12.--Right femur, posterior view.

Fig. 13.--Trochlea of the same.

EXPLANATION OF PLATE III.

_Figures one half natural size._

Palæosyops paludosus.

Figs. 1 and 2.--Ulna, anterior view, and distal articular face of same.

Figs. 3, 4, and 5.--Radius, anterior view; and distal and proximal faces of
same.

Fig. 6.--Left scapula.

Fig. 7.--Right humerus, proximal end, anterior view.

Fig. 9.--Left manus, anterior view.

Palæosyops major.

Fig. 8.--Left humerus, anterior view.

EXPLANATION OF PLATE IV.

_Figure one half natural size._

Leurocephalus cultridens.

Upper and lower jaws. View of right side. Dotted outlines indicate probable position of lower incisor and canine series.

EXPLANATION OF PLATE V.

_Figure one half natural size._

Palæosyops major.

Right innominate bone. The iliac crest and position of pubis estimated in outline.

EXPLANATION OF PLATE VI.

_Figures one third natural size._

Uintatherium leidianum.

Fig. 1.--Cervical vertebra, fifth or sixth, anterior view.

Fig. 2.--Dorsal vertebra, anterior region, view of left side.

Fig. 3.--Dorsal vertebra, middle region, posterior view.

Fig. 4.--Last lumbar vertebra, view of right side.

Fig. 5.--Last lumbar vertebra, posterior view.

Fig. 6.--Caudal series, first four vertebræ.

EXPLANATION OF PLATE VII.

_Figures one third natural size._

Uintatherium leidianum.

Fig. 1.--Anterior view of right humerus.

Fig. 2.--Ulna, side view, length estimated.

EXPLANATION OF PLATE VIII.

_Figures one third natural size._

Uintatherium leidianum.

Fig. 1.---Right scapula. The dotted outline gives an attempted restoration
of the original shape.

Fig. 2.--Tibia of left side, anterior view.

Fig. 3.--View of the proximal articular faces of same.

Fig. 4.--Right femur, posterior view.

EXPLANATION OF PLATE IX.

_Figures four fifths natural size._

Orohippus major.

Fig. 1.--Right femur, anterior view, length estimated.

Fig. 2.--Right fibula.

Fig. 3.--Right tibia, anterior view.

Fig. 4.--Calcaneum.

Figs. 5 and 6.--Astragalus and navicular.

Fig. 7.--Metatarsals and phalanges.

Last Fig.--A carnivorous sacrum, probably belonging to the brain,
described on pp. 20-22.

EXPLANATION OF PLATE X.

_Figures 1, 2, 3, 4, and 6, natural size._

Ithygrammodon cameloides.

Fig. 1.--Left premaxillary, inner view.

Fig. 2.--Left premaxillary, outer view.

Fig. 3.--Right maxillary and premaxillary, outer view, premolar, with dotted
outline indicating its probable position.

Fig. 4.--The premaxillaries in position (probable), view from above, showing
size and position of the incisors. Dotted lines indicate the premaxillary
spine (estimated).

Procamelus occidentalis, Cope, (See Wheeler's Survey, vol. iv., Plate LXXVII.)

Fig. 5.--Part of right maxillary and premaxillary, showing single incisor
with rudimentary alveolus for a second.

Protolabis ----? Cope. (See Wheeler's Survey, vol iv., p. 343.)

Fig. 6.--Right maxillary and premaxillary. (This has never been drawn
before, and was kindly lent to us for this purpose by Prof. Cope.)

Camelus bactrianus. Modern camel.

Fig. 7.--Right maxillaries, one half natural size.

SYSTEMATIC CATALOGUE

OF THE

EOCENE VERTEBRATES OF WYOMING.

Although we have endeavored to make this catalogue as complete and accurate as possible, we feel that errors and omissions are, from the nature of the case, unavoidable. The material is so vast and heterogeneous, and is so much scattered throughout numberless reports, bulletins, journals, and the like, that its correct compilation is attended with great difficulties. However, a beginning is here made which will render subsequent work easier. Owing to the great number of discoveries which have since been made, Dr. Leidy's excellent catalogue of 1871 covers now but a very small portion of the ground.

In this list we have made no attempt to decide disputed questions of priority and synonymy. Doubtless, many of the genera and species here given will be found to be synonyms of American or European forms; but at present these questions cannot be settled. Where synonyms are given, they are the determinations of the original describer indicated in subsequent publications

MAMMALIA.

PRIMATES.

Notharctus, Leidy. Pr. Ac. Nat. Sc., 1870, p. 114; Cont. to Ext.
Vert. Faun., p. 86; Ann. Rep. U. S. Geol. Survey of Terrs.,
1871, p. 364. _N. tenebrosus_, Leidy, loc. cit.

Hyopsodus, Leidy. Pr. Ac. Nat. Sc., 1870, p. 110; U. S. Survey of
Terrs., 1870, p. 354; do. 1871, p. 362; Cont. to Ext. Vert.
Faun., p. 75.

_H. paulus_, Leidy, loc. cit.

_H. minusculus_, Leidy. Cont. to Ext. Vert. Faun., p. 81.

_H. gracilis_, Marsh. Am. Journ. of Sci., vol. ii., p. 42.

_H. vicarius_, Cope. Described in U. S. Survey of Terrs., 1872, p. 609, as _Microsyops vicarius_. Wheeler's Survey, vol. iv., pt. ii., p. 150.

Microsyops, Leidy. Pr. Ac. Nat. Sc., 1872, p. 20; U. S. Survey of
Terrs., 1871, p. 363; Cont. to Ext. Vert. Faun., p. 82.

_M. gracilis_, Leidy, loc. cit. In the "Contributions," Dr. Leidy, considering _Limnotherium_, Marsh, as a synonym of _Microsyops_, has called this species _M. elegans_.

Hipposyus, Leidy. Pr. Ac. Nat. Sc., 1872, p. 37; Cont. to Ext.
Vert. Faun., p. 90.

_H. formosus_, Leidy, loc. cit.

_H. robustior_, Leidy Cont. to Ext. Vert. Faun., p. 93; _Notharctus robustior_. U. S. Geol. Survey of Terrs., 1871, p. 364.

Antiacodon, Marsh. Am. Journ. of Sci., 3d Ser. vol. iv., p. 210.

_A. venustus_, Marsh, loc. cit.

Bathrodon, Marsh. Am. Journ. of Sci., 3d Ser. vol. iv., p. 211.

_B. typus_, Marsh, loc. cit.

Lemuravus, Marsh. Am. Journ. of Sci., 3d Ser. vol. ix., p. 239.

_L. distans_, Marsh, loc. cit.

Limnotherium, Marsh. Am. Journ. of Sci., 3d Ser. vol. ii., p. 43.

_L. tyrannus_, Marsh, loc. cit.

_L. elegans_, Marsh, loc. cit.

_L. affine_, Marsh. Am Journ. of Sci., 3d Ser. vol. iv., p. 207.

Mesacodon, Marsh. Am. Journ. of Sci., 3d Ser. vol. iv., p. 212.

_M. speciosus_, Marsh, loc. cit.

Palæacodon, Leidy. Pr. Ac. Nat. Sc., 1872; p. 21. U. S. Geol.
Survey of Terrs., 1871, p. 356; Cont. to Ext. Vert. Faun., p.
122.

_P. verus_, Leidy, loc. cit.

_P. vagus_, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 224.

Telmatolestes, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 206.

_T. crassus_, Marsh, loc. cit.

Tomitherium, Cope. Pr. Am. Phil. Soc., 1872, p. 470; U. S. Geol.
Survey of Terrs., 1872, p. 546; Wheeler's Survey, vol. iv., p.
135, pt. ii.

_T. rostratum_, Cope, loc. cit.; U. S. Survey, 1872, p. 548.

Anaptomorphus, Cope. Pr. Am. Phil. Soc., 1872, p. 554; U. S. Geol.
Survey of Terrs., 1872, p. 549.

_A. æmulus_, Cope, loc. cit.

Oligotomus, Cope. On some Eocene mammals, p. 2; U. S. Geol. Survey
of Terrs., 1872, p. 607.

_O. cinctus_, Cope, loc. cit.

Opisthotomus, Cope. Wheeler's Survey, vol. iv., p. 151, pt. ii.

_O. astutus_, loc. cit., p. 152.

Pantolestes, Cope. Pr. Am. Phil. Soc., 1872, p. 467; Wheeler's
Survey, v. iv., pt. ii., p. 145.

_P. longicaudus_. Pr. Am. Phil. Soc., 1872, p. 467; _Notharctus longicaudus_, U. S. Geol. Survey of Terrs., 1872, p. 549.

Sarcolemur, Cope. Pr. Ac. Nat. Sc., 1875, p. 256; Wheeler's Survey,
v. iv., pt. ii., p. 147.

_S. pygmæus_, Cope. _Lophiotherium pygmæus_, Pr. Am. Phil. Soc., 1872, extras July 20; _Antiacodon pygmæus_, U. S. Geol. Survey of Terrs., 1872, p. 607; _Hyopsodus pygmæus_, Pr. Am. Phil. Soc., 1872, p. 461.

_S. furcatus_, Cope. _Antiacodon furcatus_. On some Eocene mammals, p. i.; U. S. Geol. Survey of Terrs., 1872, p. 608.

Thinolestes, Marsh. Am. Journ. Sc., 3d Ser. vol. iv., p. 205.

_T. anceps_, Marsh, loc. cit.

CARNIVORA.

Uintacyon, Leidy. Pr. Ac. Nat. Sc., 1872, p. 277; Cont. to Ext.
Vert. Faun., p. 118.

_U. edax_, Leidy, loc. cit.

_U. vorax_, Leidy, loc. cit. Cont. to Ext. Vert. Faun., p. 120.

Sinopa, Leidy. Pr. Ac. Nat. Sc., 1871, p. 115; U. S. Geol. Survey
of Terrs., 1871, p. 355; Cont. to Ext. Vert. Faun., p. 116.

_S. rapax_, Leidy, loc. cit.

_S. eximia_, Leidy. Cont. to Ext. Vert. Faun., p. 118.

Canis.

_C. montanus_, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 123.

Dromocyon, Marsh. Am. Jour. of Sc., 3d Ser. vol. xii., p. 403.

_D. vorax_, Marsh, loc. cit.

Harpalodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 216.

_H. sylvestris_, Marsh, loc cit.

_H. vulpinus_, Marsh, loc. cit., p. 217.

Limnocyon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 126.

_L. verus_, Marsh, loc. cit.

_L. riparius_, Marsh, loc. cit., p. 203.

_L. agilis_, Marsh, loc. cit., p. 204.

Limnofelis, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 202.

_L. ferox_, Marsh, loc. cit.

_L. latidens_, Marsh, loc. cit., p. 203.

Oreocyon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 406

_O. latidens_, Marsh, loc. cit.

Thinocyon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 204.

_T. velox_, Marsh, loc. cit.

Viverravus, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 127.

_V. gracilis_, Marsh, loc. cit.

_V. (?) nitidus_, Marsh, loc. cit., p. 205.

Ziphacodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 216.

_Z. rugatus_, Marsh, loc. cit.

Vulpavus, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 124.

_V. palustris_, Marsh, loc. cit.

Miacis, Cope. Pr. Am. Phil. Soc., 1872, p. 470.

_M. parvivorus_, loc. cit.; _Viverravus parvivorus_, U. S. Geol. Survey of Terrs., 1872, p. 560.

Mesonyx, Cope. Pr. Am. Phil. Soc., 1872. p. 460; U S. Geol. Survey
of Terrs., 1872, p. 550.

_M. obtusidens_, Cope, loc. cit. U. S. Survey, p. 552.

Synoplotherium, Cope. Pr. Am. Phil. Soc., 1872, p. 483; U. S. Geol.
Survey of Terrs., 1872, p. 554.

_S. lanius_, Cope, loc. cit. U. S. Survey, p. 557.

Stypolophus, Cope. Pr. Am. Phil. Soc., 1872, p. 466; U. S. Geol.
Survey of Terrs., 1872, p. 559; Wheeler's Survey, vol. iv., p.
109.

_S. insectivorus_, Cope. Pr, Phil. Soc., 1872, p. 469; U. S. Survey, 1872, p. 557.

_S. pungens_, Cope, loc. cit., pp. 466, 559

_S. brevicalcaratus_, Cope, loc. cit., pp. 469, 560.

Megencephalon, gen. nov. This report, p 20.

_M. primævus_, sp. nov. This report, p. 20.

UNGULATA.

PERISSODACTYLA.

Anchitherium.

_A._ (?)----. This report, p. 23.

Orohippus, Marsh. Am. Jour. of Sc., vol. iv., p. 207; vol. vii., p.
247.

_O. pumilus_, Marsh, loc. cit., 3d Ser. vol. iv., p. 207.

_O. agilis_, Marsh, loc. cit., 3d Ser. vol. v., p. 407.

_O. major_, Marsh, loc. cit., vol. 3d Ser. vii., p. 248.

_O. gracilis_, Marsh, loc. cit., 3d Ser. vol. vii., p. 249; _Anchitherium gracile_ 3d Ser. vol. ii., p. 38.

_O. procyoninus_, Cope. Pr. Am. Phil. Soc., 1872, p. 466; U. S. Geol. Survey, 1872, p. 606.

Palæosyops, Leidy. Pr. Ac. Nat. Sc., 1870, p. 113; 1871, pp. 114,
118, 197, 229; 1872, pp. 168, 241; U. S. Geol. Survey, 1870,
p. 355; 1871, p. 358; Com. to Ext. Vert. Faun., p. 27; Cope,
U. S. Geol. Survey of Terrs., 1872, p. 591.

_P. paludosus_, Leidy, loc. cit. Cont. to Ext. Vert. Faun., p. 28.

_P. major_, Leidy. U. S. Geol. Survey of Montana, 1871, p. 359; Pr. Ac. Nat. Sc., 1872, pp. 168, 241; Cont. to Ext. Vert. Faun., p. 45.

_P. humilis_, Leidy. Pr. Ac. Nat. Sc., 1872, p. 168, 277; Cont. to Ext. Vert. Faun., p. 58.

_P. junius_, Leidy. Pr. Ac. Nat. Sc., 1872, p. 277; Cont. to Ext. Vert. Faun., p. 57.

_P. lævidens_, Cope. Pr. Am. Phil. Soc., 1873; U. S. Survey, 1872, p. 591.

_P. vallidens_, Cope. Pr. Am. Phil. Soc., 1872, p. 487; loc. cit., p. 592.

_P. minor_, Marsh. Am. Jour. of Sc., vol. ii., p. 36.

Limnohyus, Leidy. Pr. Ac. Nat. Sc., 1872, p. 242; Cont. to Ext.
Vert. Faun., p. 58; Marsh, Am. Jour. of Sc., 1872, 3d Ser.
vol. iv., p. 124.

_L. laticeps_, Marsh. _Palæosyops laticeps_. Am. Journ. Sc. 3d Ser. vol. iv., p. 122.

_L. robustus_, Marsh, loc. cit., p. 124, is same as _P. major_, Leidy.

_L. diaconus_, Cope. U. S. Geol. Survey of Terrs., 1872, p. 593.

_L. fontinalis_, Cope, loc. cit., p. 594.

Telmatherium, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 123.

_T. validum_, Marsh, loc. cit.

Leurocephalus, gen. nov. This report, p. 42.

_L. cultridens_, sp. nov. This report, p. 42.

Hyrachyus, Leidy. Pr. Ac. Nat. Sc., 1871, p. 229; 1872, pp. 19,
163; U. S. Geol. Survey, 1871, p. 360; Cont. to Ext. Vert.
Faun., p. 60.

_H. agrarius_, Leidy, loc. cit.; _H. agrestis_. U. S. Survey, 1871, p. 357.

_H. eximius_, Leidy. Pr. Ac. Nat. Sc., 1871, p. 229; 1872, p. 163; U. S. Geol. Survey of Terrs., 1871, p. 361; Cont. to Ext. Vert. Faun., p. 66; Cope, U. S. Geol. Survey of Terrs., 1872, p. 595.

_H. modestus_, Leidy. Pr. Ac. Nat. Sc., 1872, p. 20; U. S. Geol. Survey of Terrs., 1871, p. 361; Cont. to Ext. Vert. Faun., p. 67; _Lophiodon modestus_, Pr. Ac. Nat. Sc., 1870. p. 109.

_H. nanus_, Leidy. Pr. Ac. Nat. Sc., 3d Ser. 1872, p. 20; U. S. Survey, 1871, p. 361; Cont. to Ext. Vert. Faun., p. 67.

_H. princeps_, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 125.

_H. implicatus_, Cope. On Some Eocene Mammals, p. 5; U. S. Survey, 1872, p. 604.

_H. crassidens_, sp. nov. This report, p. 52.

_H. imperialis_, sp. nov. This report, p. 50.

_H. intermedius_, sp. nov. This report, p. 51.

_H. paradoxus_, sp. nov. This report, p. 53.

Helaletes, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 218.

_H. boöps_, Marsh, loc. cit.

_H. latidens_, sp. nov. This report, p. 54.

Lophiodon.

_L bairdianus_, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 36.

_L. affinis_, loc. cit., p. 37.

_L. nanus_, loc. cit.

_L. pumilus_, loc. cit., p. 38.

Lophiotherium.

_L. sylvaticum_, Leidy. Pr. Ac. Nat. Sc., 1870, p. 126; Cont. to Ext. Vert. Faun., p. 69.

_L. Ballardi_, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 39.

Orotherium, Marsh. Am: Jour. of Sc., 3d Ser. vol. iv., p. 217.

_O. mintanum_, Marsh, loc. cit.

Helohyus, Marsh. Am. Journ. of Sc., 3d Ser. vol. iv., p. 207.

_H. plicodon_, Marsh, loc. cit.

Thinotherium, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 208.

_T. validum_, Marsh, loc. cit.

ARTIODACTYLA.

All the forms described under this head are of uncertain reference.

Elotherium.

_E. lentum_, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 39.

Platygonus.

_P. Ziegleri_, Marsh, loc cit., p. 40.

Parahyus, Marsh. Am. Jour. of Sc., 3d Ser. vol. xii., 402.

_P. vagus_, Marsh, loc. cit.

Homacodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 126.

_H. vagans_, Marsh, loc. cit.

Ithygrammodon, gen. nov. This report, p. 56.

_I. cameloides_, sp. nov. This report, p. 57.

AMBLYPODA.

Cope. Wheeler's Survey, vol., iv., pt. ii., p. 179.

DINOCERATA.

Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 344; Ibid. vol. v., pp. 117-122, 293; Ibid. vol. vi., p. 300; Ibid. vol. xi., p. 163.

Uintatherium, Leidy. Pr. Ac. Nat. Sc., 1872, p. 169; Am. Jour. of
Sc., 3d Ser. vol. iv., p. 239; Cont. to Ext. Vert. Faun., p.
96.

_U. robustum_, Leidy, loc. cit.; _Uintamastix atrox_, loc. cit.

_U. Leidianum_, sp. nov. This report, p. 3.

_U. princeps_, sp. nov. This report, p. 81.

Tinoceras, Marsh. _Titanotherium_ (?), Am. Jour. of Sc., 3d Ser.
vol. ii., p. 35; _Mastodon_, loc. cit., vol. iv., p. 123,
footnote; _Tinoceras_, loc. cit., vol. iv., pp. 322 and 323.

_T. anceps_, Marsh, loc. cit., vol. iv., p. 322.

_T. grandis_, Marsh, loc. cit., p. 323.

Dinoceras, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 344; Ibid.
vol. v., pp. 117-122; Ibid. vol. v., p. 408.

_D. mirabilis_, Marsh, loc. cit., vol. iv., p. 344.

_D. lucaris_, Marsh, loc. cit., vol. v., p. 408.

_D. lacustre_, Marsh, loc. cit., vol. iv., p. 344.

Loxolophodon, Cope. Pr. Am. Phil. Soc., 1872, pp. 580, 488; U. S.
Survey, 1872, p. 565.

_L. cornutus_, Cope, loc. cit.; U. S. Survey, 1872, p. 568.

Eobasileus, Cope. Pr. Am. Phil. Soc., 1872, p. 485; U. S. Survey,
1872, p. 575.

_E. pressicornis_, Cope. Pr. Am. Phil. Soc., 1872, p. 580; loc. cit.

_E. furcatus_, Cope. U. S. Survey, 1872, p. 580; _Loxolophodon furcatus_, Pr. Am. Phil. Soc., 1872, p. 580.

Coryphodon.

_C. hamatus_, Marsh. Am. Jour. of Sc., 3d Ser. vol. xi., p. 425.

Bathmodon, Cope. Pr. Am. Phil. Soc., 1872, p. 417; U. S. Geol.
Survey, 1871, p. 350; 1872, p. 586.

_B. radians_, Cope, loc. cit.

_B. semicinctus_, Cope, loc. cit.

_B. latipes_, Cope, loc. cit.

Metalophodon, Cope. Pr. Am. Phil. Soc., 1872, p. 542; U. S. Geol.
Survey, 1872, p. 589.

_M. armatus_, Cope, loc. cit.

TILLODONTIA.

Marsh. Am. Jour. of Sc., 3d Ser. vol. ix., p. 221; vol. xi., p. 249.

Anchippodus, Leidy. Pr. Ac. Nat. Soc., 1868, p. 232; Ext. Mam. N.
Am., p. 403.

_Trogosus._ Pr. Ac, 1871, p. 113; Cont. to Ext. Vert. Faun., p. 71.

_A. riparius_, Leidy. Pr. Ac. Nat. Soc., 1868, p. 232; Cont. to Ext. Vert. Faun., p. 71 (as _Trogosus castoridens_).

_A. vetulus_, Leidy; _Trogosus vetulus_, Pr. Ac. Nat. Sc., 1871, p. 229; Cont. to Ext. Vert. Faun., p. 75.

Tillotherium. Am. Jour. of Sc., 3d Ser. vol. v., p. 485; Ibid. vol.
xi., p. 249.

_T. hydracoides_, Marsh, loc. cit.

_T. latidens_, Marsh, loc. cit., vol. vii., p. 533.

_T. fodiens_, Marsh, loc. cit., vol. ix., p. 241.

Stylinodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. vii., p. 532.

_S. mirus_, loc. cit.

RODENTIA.

Paramys, Leidy. Pr. Ac. Nat. Sc., 1871, p. 231; U. S. Geol. Survey,
1871, p. 357; Cont. to Ext. Vert. Faun., p. 110.

_P. delicatus_, Leidy, loc. cit.

_P. delicatior_, Leidy, loc. cit.

_P. delicatissimus_, Leidy, loc. cit.; Cont. to Ext. Vert. Faun., p. 111.

_P. robustus_, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 218.

_P. superbus_, sp. nov. This report, p. 84.

_P. leptodus_, Cope. U. S. Geol. Survey, 1872, p. 609.

Mysops, Leidy. Pr. Ac. Nat. Sc., 1871, p. 232; U. S. Geol. Survey,
1871, p. 357; Cont. to Ext. Vert. Faun., p. 111.

_M. minimus_, Leidy, loc. cit.

_M. fraternus_, Leidy. Cont. to Ext. Vert. Faun., p. 112.

Pseudotomus, Cope. Pr. Am. Phil. Soc., 1872, p. 467; U. S. Geol.
Survey, 1872, p. 610.

_P. hians_, Cope, loc. cit.

Arctomys, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 121.

_A. vetus_, Marsh, loc. cit.

Geomys, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 121.

_G. bisulcatus_, Marsh, loc. cit.

Sciuravus, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 122.

_S. nitidus_, Marsh, loc. cit.

_S. undans_, Marsh, loc. cit.

_S. parvidens_, Marsh, loc. cit., 3d Ser. vol. iv., p. 220.

Tillomys, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 219.

_T. senex_, Marsh, loc. cit.

_T. parvus_, Marsh, loc. cit.

Tachymys, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 219.

_T. lucaris_, Marsh, loc. cit.

Colonymys, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 220.

_C. celer_, Marsh, loc. cit.

INSECTIVORA.

Omomys, Leidy. Pr. Ac. Nat. Sc., 1869, p. 63; Ext. Mam. of N. Am.,
p. 408; Cont. to Ext. Vert. Faun., p. 120.

_O. Carteri_, Leidy, loc. cit.

Washakius, Leidy. Cont. to. Ext. Vert. Faun., p. 123.

_W. insignis_, Leidy, loc. cit.

Passalacodon, Marsh. Am. Jour. of Sc., vol. iv. p. 208.

_P. litoralis_, Marsh, loc. cit.

Anisacodon,[4] Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 209.

[Footnote 4: Professor Marsh has subsequently used this name to designate a genus of the _Brontotheridæ_. Am. Jour. of Sc., vol. ix., p. 246.]

_A. elegans_, Marsh, loc. cit.

Centetodon, Marsh, Am. Jour. of Sc., 3d Ser. vol. iv., p. 209.

_C. pulcher_, Marsh, loc. cit.

_C. altidens_, Marsh, loc. cit., p. 214.

Hemiacodon, Marsh, Am. Jour. of Sc., 3d Ser. vol. iv., p. 212.

_H. gracilis_, Marsh, loc. cit.

_H. nanus_, Marsh, loc. cit., p. 113

_H. pucillus_, Marsh, loc. cit.

Entomodon, Marsh, Am. Jour. of Sc., 3d Ser. vol. iv., p. 214.

_E. comptus_, Marsh, loc. cit.

Entomacodon, Marsh, Am. Jour. of Sc., 3d Ser. vol. iv., p. 214.

_E. minutus_, Marsh, loc. cit.

_E. angustidens_, Marsh, loc. cit., p. 222.

Apatemys, Marsh, Am. Journ. of Sc., 3d Ser. vol. iv., p. 221.

_A. bellus_, Marsh, loc. cit.

_A. bellulus_, Marsh, loc. cit.

Talpavus, Marsh, Am. Journ. of Sc., 3d Ser. vol. iv., p. 128.

_T. nitidus_, Marsh, loc cit.

CHIROPTERA.

Nyctitherium, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 127.

_N. velox_, Marsh, loc. cit.

_N. priscum_, Marsh, loc. cit., p. 128.

Nyctilestes, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 215.

_N. serotinus_, Marsh, loc. cit.

MARSUPIALIA.

Triacodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 123.

_T. fallax_, Marsh, loc. cit.

_T. grandis_, Marsh, loc. cit. 3d Ser. vol. iv., p. 222.

_T. nanus_, Marsh, loc. cit., p. 223.

_T. aculeatus_, Cope. Pr. Phil. Soc., 1872, p. 460; U. S. Geol. of Terrs., 1872, p. 611.

_Genera incertæ sedis._

Stenacodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 210.

_S. rarus_, Marsh, loc. cit.

AVES.

RAPTORES.

Bubo.

_B. leptosteus_, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii, p. 126.

GRALLATORES.

Aletornis, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 256.

_A. nobilis_, Marsh, loc. cit.

_A. pernix_, Marsh, loc. cit.

_A. venustus_, Marsh, loc. cit., p. 257.

_A. gracilis_, Marsh, loc. cit., p. 258.

_A. bellus_, Marsh, loc. cit.

SCANSORES.

Uintornis, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 259.

_U. lucaris_, Marsh, loc. cit.

REPTILIA.

CROCODILIA.

Crocodilus.

_C. liodon_, Marsh. Am. Jour. of Sc., 3d Ser. vol. i., p. 454.

_C. affinis_, Marsh, loc. cit.

_C. Grinnelli_, Marsh, loc. cit., p. 455.

_C. brevicollis_, Marsh, loc. cit., p. 456.

_C. parvus_, sp. nov. This report, p. 91.

_C. clavis_, Cope. Pr. Am. Phil. Soc., 1872, p. 485; U. S. Geol. Survey, 1872, p. 612.

_C. sulciferus_, Cope. Pr. Am. Phil. Soc., 1872, p. 555; U. S. Survey, loc. cit.

_C. hetorodon_, Cope. _Alligator heterodon_, Pr Am. Phil. Soc., 1872, p. 544; U. S. Geol. Survey, 1872, p. 614.

_C. aptus_, Leidy. Cont. to Ext. Vert. Faun., p. 126.

_C. Elliotii_, Leidy, loc cit.

Diplocynodus.

_D. subulatus_, Cope. U. S. Geol. Survey, 1872, p. 613; _Crocodilus subulatus_, Pr. Am. Phil. Soc., 1872, p. 554.

_D. polyodon_, Cope. U. S. Geol. Survey, 1872, p. 614. (In his report to Lt. Wheeler, Prof. Cope says that "a single species, the _D. subulatus_, occurs" in the Bridger Basin, (p. 60). It is therefore probable that he has changed the _D. polyodon_, but we cannot find its synonym.)

LACERTILIA.

Saniva, Leidy. Pr. Ac. Nat. Sc., 1870, p. 124; U. S. Survey, 1870,
p. 368; do., 1871, p. 370; Com. to Ext. Vert. Faun., p. 181.

_S. ensidens_, Leidy, loc. cit.

_S. major_, Leidy. Cont. to Ext. Vert. Faun., p. 182.

Chameleo.

_C. pristinus_, Leidy. Pr. Ac. Nat. Sc., 1872, p. 277; Cont. to Ext. Vert. Faun., p. 184.

Naocephalus, Cope. Pr. Am. Phil. Soc., 1872, p. 465; U. S. Geol.
Survey, 1872, p. 631.

_N. porrectus_, Cope, loc. cit.; U. S. Geol. Survey, 1872, p. 632.

Glyptosaurus, Marsh. Pr. Ac. Nat. Sc., 1871, p. 105; Am. Jour. of
Sc., 3d Ser. vol. i., p. 456.

_G. sylvestris_, Marsh, loc. cit.

_G. nodosus_, Marsh, Am. Jour. of Sc., vol. i., p. 458.

_G. ocellatus_, Marsh, loc. cit., vol. i., p. 458, and vol. iv., p. 306.

_G. anceps_, Marsh, loc. cit., vol. i., p. 458.

_G. princeps_, Marsh, loc. cit., 3d Ser. vol. iv., p. 302.

_G. brevidens_, Marsh, loc. cit., p. 305.

_G. rugosus_, Marsh, loc. cit.

_G. sphenodon_, Marsh, loc. cit., p. 306.

Thinosaurus, Marsh. Am. Jour. of Sc., 3 Ser. vol. iv., p. 299.

_T. paucidens_, Marsh, loc. cit.

_T. leptodus_, Marsh, loc. cit., p. 300.

_T. crassus_, Marsh, loc. cit., p. 301.

_T. grandis_, Marsh, loc. cit.

_T. agilis_, Marsh, loc. cit., p. 302.

Oreosaurus, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 303.

_O. vagans_, Marsh, loc. cit.

_O. lentus_, Marsh, loc. cit., p. 307.

_O. gracilis_, Marsh, loc. cit.

_O. microdus_, Marsh, loc. cit., p. 308.

_O. minutus_, Marsh, loc. cit.

Tinosaurus, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 304.

_T. stenodon_, Marsh, loc. cit.

_T. lepidus_, Marsh, loc. cit., p. 308.

Iguanavus, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 309.

_I. exilis_, Marsh, loc. cit.

Limnosaurus, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 309.

_L. ziphodon_, Marsh, loc. cit.; _Crocodilus ziphodon_, loc. cit., vol. i., p. 453.

OPHIDIA.

Boavus, Marsh. Am. Jour. of Sc., 3d Ser. vol. i., p. 323.

_B. occidentalis_, Marsh, loc. cit.

_B. agilis_, Marsh, loc. cit., p. 324.

_B. brevis_, Marsh, loc. cit.

Lithophis, Marsh. Am. Jour. of Sc., 3d Ser. vol. i., p. 325.

_L. Sargenti_, Marsh, loc. cit.

Limnophis, Marsh. Am. Jour. of Sc., 3d Ser. vol. i., p. 326.

_L. crassus_, Marsh, loc. cit.

Protagras, Cope. Pr. Am. Phil. Soc., 1872, p. 471: U. S. Geol.
Survey, 1872, p. 632.

_P. lacustris_, Cope, loc. cit.

CHELONIA.

Testudo.

_T. Corsoni_, Leidy. Pr. Ac. Nat. Sc., 1871, p. 154; 1872, p. 268; U. S. Geol. Survey, 1871, p. 366; Cont. to Ext. Vert. Faun., p. 132; _Emys Carteri_, Pr. Ac. Nat. Sc., 1871, p. 228; U. S. Geol. Survey, 1871, p. 367. (Professor Cope refers this species to his _Hadrianus_.)

Hadrianus, Cope. Pr. Am. Phil. Soc., 1872, p. 468; U. S. Geol.
Survey of Terrs., 1872, p. 630.

_H. allabiatus_, Cope. Pr. Am. Phil. Soc., 1872, p. 471; U. S. Survey, loc. cit.

_H. octonarius_, Cope, loc. cit. Pr. Am. Phil. Soc. 1872, p. 468.

EMYS.

_E. wyomingensis_, Leidy. Pr. Ac. Nat. Sc., 1869, p. 66; U. S. Geol. Survey, 1871, p. 367; Cont. to Ext. Vert. Faun., p. 140. _E. Feansii_, Pr. Ac. Nat. Sc., 1870, p. 123; _E. stevensoniansis_, loc. cit., p. 5. _E. Haydem_, loc. cit., p. 123.

_E. septarius_, Cope. U. S. Geol. Survey, 1872, p. 625.

_E. latilabiatus_, Cope. Pr. Am. Phil. Soc., 1872, p. 471; loc. cit., p. 626.

_E. gravis_, Cope. _Notomorpha gravis_ and _N. Garmanii_, Pr. Am. Phil. Soc., 1872, pp. 476-77; _E. gravis_, U. S. Survey, 1872, p. 626.

_E. testudineus_, Cope. U. S. Geol. Survey, 1872, p. 627; _Notomorpha testudineus_, Pr. Am. Phil. Soc., 1872, p. 475.

_E. euthnætus_, Cope. U. S. Geol. Survey, 1872, p. 628.

_E. megaulax_, Cope, loc. cit.

_E. pachylomus_, Cope, loc. cit., p. 629.

_E. terrestris_, Cope, loc. cit.; _Palæotheca terrestris_, Pr. Am. Phil. Soc., 1872, p. 464.

_E. polycyphus_, Cope, loc. cit., 630; _P. polycyphus_, loc. cit., p. 463.

Hybemys, Leidy. Pr. Ac. Nat. Sc., 1871; p. 103; Cont. to Ext. Vert.
Faun., p. 174.

_H. arenarius_, Leidy, loc. cit.

Baptemys, Leidy. Pr. Ac. Nat. Sc., 1870, p. 4; U. S. Survey, 1870,
p. 367; do., 1872, p. 367; Cont. to Ext. Vert. Faun., 157.
(Professor Cope refers this genus to _Dermatemys Gray_).

_B. wyomingensis_, Leidy, loc. cit.

Chisternon, Leidy. Pr. Ac. Nat. Sc., 1872, p. 162.

_C. undatum._ Cont. to Ext. Vert. Faun., p. 341; _Baena undata_, Pr. Ac. Nat. Sc., 1871, p. 228; U. S. Survey, 1871, p. 369; Cont. to Ext. Vert. Faun., p. 161.

Baena, Leidy. Pr. Ac. Nat. Sc., 1871, p. 228; U. S. Survey, 1870,
p. 367; do., 1871, p. 368; Cont. to Ext. Vert. Faun., p. 161.

_B. arenosa_, Leidy, loc. cit.; _Baena affinis_, U. S. Survey, 1870, p. 367.

_B. hebraica_, Cope. Pr. Am. Phil. Soc., 1872, p. 463; U. S. Survey, 1872, p. 621.

_B. ponderosa_, Cope. U. S. Survey, 1872, p. 624.

Anosteira, Leidy. Pr. Ac. Nat. Sc., 1871, p. 102, 114; U. S.
Survey, 1871, p. 370; Cont. to Ext. Vert. Faun., p. 174.

_A. ornata_, Leidy, loc. cit.

_A. radulina_, Cope. Pr. Am. Phil. Soc., 1872, p. 555; U. S. Survey, 1872, p. 650.

Trionyx.

_T. guttatus_, Leidy. Pr. Ac. Nat. Sc., 1869, p. 66; 1870, p. 5; 1871, p. 228; U. S. Geol. Survey, 1870, p. 367; do., 1871. p. 370; Cont. to Ext. Vert. Faun., p. 176.

_T. uintaensis_, Leidy. Pr. Ac. Nat. Sc., 1872, p. 267; Cont. to Ext. Vert. Faun., p. 178.

_T. heteroglyptus_, Cope. U. S. Geol, Survey, 1872, p. 616.

_T. scutumantiquum_, Cope, loc. cit., p. 617.

_T. concentricus_, Cope, loc. cit.; Pr. Am. Phil. Soc., 1872, p. 469.

Axestus, Cope. Pr. Am. Phil. Sc., 1872, p. 462; U. S. Geol. Survey,
1872, p. 615.

_A. byssinus_, Cope, loc. cit., p. 616.

Plastomenus, Cope. U. S. Geol. Survey of Terrs. 1872, p. 617.

_P. Thomasii_, Cope, loc. cit., p. 618; _Trionyx Thomasii_, Pr. Am. Phil. Soc., 1872, p. 462.

_P. trionychoides_, Cope, loc. cit., 619; _Anostira trionychoides_, Pr. Am. Phil. Soc., 1872, p. 461.

_P. multifoveatus_, Cope, loc. cit., p. 619.

_P. ædemius_, Cope, loc. cit.; _Anostira ædemius_, Pr. Am. Phil. Soc., 1872, p. 461.

_P. molopinus_, Cope, loc. cit. p. 620; _Anostira molopinus_, Pr. Am. Phil. Soc., 1872, p. 461.

AMPHIBIA.

Incertæ sedis, I, Cope. U. S. Geol. Survey, 1872, p. 633.

PISCES

TELEOCEPHALI.

Clupea.

_C. humilis_, Leidy. Pr. Ac. Nat. Sc., 1856, p. 266; U. S. Geol. Survey, 1870, p. 369; do., 1871, p. 372; Cont. to Ext. Vert. Faun., p. 195.

_C. alta_, Leidy. Cont. to Ext. Vert. Faun., p. 196. (Cope refers these two species to _Diplomystus_ )

_C. pusilla_, Cope. Pr. Am. Phil. Soc., 1870, p. 382; U. S. Survey, 1870, p. 429.

Diplomystus, Cope. U. S. Geol. Survey Bulletin, vol. iii., No, 4,
p. 808.

_D. dentatus_, Cope, loc. cit.

_D. analis_, Cope, loc. cit., p. 809.

_D. pectorosus_, Cope, loc. cit., p. 810.

Osteoglossum.

_O. encaustum_, Cope. U. S. Geol. Survey, 1870, p. 430.

Dapedoglossus, Cope. U. S. Geol. Survey; Bulletin, vol. iii., No.
4, p. 807.

_D. testis_, Cope, loc. cit.

_D. æquipinnis_, Cope, loc. cit., vol. iv., No. 1, p. 77.

Erismatopterus, Cope. U. S. Geol. Survey, 1870, p. 427.

_E. Rickseckeri_, Cope, loc. cit.

_E. levatus_, Cope, loc. cit., p. 428; _Cyprinodon levatus_, Pr. Am. Phil. Soc., 1870, p. 382.

_E. Endlichi_, Cope. U. S. Geol. Survey Bulletin, vol. iii., No. 4, p. 811.

Amphiplaga, Cope. U. S. Geol Survey Bull., vol. iii., No. 4, p. 812.

_A. brachyptera_, Cope, loc. cit.

Asineops, Cope. Pr. Am. Phil. Soc., 1870, p. 380; U. S. Geol.
Survey, 1870, p. 425.

_A. squamifrons_, Cope. Pr. Phil. Soc., p. 381; U. S. Survey, 1870, p. 426.

_A. vividensis_, Cope. U. S. Survey, 1870, p. 426.

_A. pauciradiatus_, Cope. U. S. Geol. Survey Bull., vol. iii., No. 4, p. 813.

Mioplosus, Cope. U. S. Geol. Survey Bull., vol. iii., No. 4, p. 813.

_M. abbreviatus_, Cope, loc. cit.

_M. labracoides_, Cope, loc. cit., p. 814.

_M. longus_, Cope, loc. cit., p. 815.

_M. Beanii_, Cope, loc. cit., p. 816.

Priscacara, Cope. U. S. Geol. Survey Bull., vol. iii., No. 4, p.
816.

_P. serrata_, Cope, loc. cit.

_P. cypha_, Cope, loc. cit., p. 817.

_P. liops_, Cope, loc. cit., p 818.

_P. oxyprion_, Cope, loc. cit., vol. iv., No. i, p. 74.

_P. Pealeii_, Cope, loc. cit., p. 75.

_P. clivosa_, Cope, loc. cit., p. 76.

NEMATOGNATHI.

Pimelodus.

_P. antiquus_, Leidy. Pr. Ac. Nat. Sc., 1873, p. 99; Cont. to Ext. Vert. Faun., p. 193.

Phareodon, Leidy. Pr. Ac. Nat. Sc., 1873, p. 99; Cont. to Ext.
Vert. Faun., p. 193.

_P. acutus_, Leidy, loc. cit.

_P. sericeus_, Cope, U. S. Geo!. Survey, 1872, p. 638.

Rhineastes, Cope. Pr. Am. Phil. Soc., 1872, p. 486; U. S. Geol.
Survey, 1872, p. 638.

_R. peltatus_, Cope, loc. cit.

_R. Smithii_, Cope, loc. cit.

_R. radulus_, Cope. U. S. Geol. Survey, 1872, p. 639.

_R. calvus_, Cope, loc. cit., p. 640.

_R. arcuatus_, Cope, loc. cit., p. 641.

CYCLOGANOIDEI.

Amia. _A. (Protamia) uintaensis_, Leidy. Pr. Ac. Nat. Sc., 1873, p.
98; Cont., p. 185.

_A. (Protamia) media_, Leidy, loc. cit.; Cont. to Ext. Vert. Faun., p. 108.

_A. (Protamia) gracilis_, Leidy, loc. cit.

_A. depressa_, Marsh. Pr. Ac Nat. Sc., 1871, p. 105.

_A. Newberriana_, Marsh, loc. cit.

Hypamia, Leidy. Pr. Ac. Nat. Sc., 1873, p. 98; Cont. to Ext. Vert.
Faun., p. 189.

_H. elegans_, Leidy, loc. cit.

Pappichthys, Cope. U. S. Geol. Survey, 1872, p. 634.

_P. sclerops_, Cope, loc. cit., p. 635.

_P. plicatus_, Cope, loc. cit.

_P. lævis_, Cope, loc. cit., p. 636.

_P. symphysis_, Cope, loc. cit.

_P. Corsonii_, Cope, loc. cit.

RHOMBOGANOIDEI.

Lepidosteus. _L. atrox_, Leidy. Pr. Ac. Nat. Sc., 1873, p. 97;
Cont. to Ext. Vert. Faun., p. 189.

_L. simplex_, Leidy. Pr. Ac. Nat. Sc., 1873, p. 98; Cont. to Ext. Vert. Faun , p. 191.

_L. notabilis_, Leidy, loc. cit.

_L. glaber_, Marsh. Pr. Ac. Nat. Sc., 1872, p. 103.

_L. Whitneyi_, Marsh, loc. cit. (These species are all referred to _Clastes_ by Cope.)

Clastes, Cope. U. S. Geol. Survey, 1872, p. 633.

_C. anax_, Cope, loc. cit.

_C. cyliferus_, Cope, loc. cit., p. 634.

* * * * *

Transcriber Note

Minor typos were corrected.