269 



PLATECAEPUS TECTULUS, Cope. Plates XXI, fig. 3-G ; XXVII, figs. 5-10. 



Holcodus tcelulus, Proceedings of the American Philosophical Society, 1871, December. 



Niobrara chalk of the Smoky Hill River. 



MOSASAURUS, Conyb. 



Cuvier, Ossemeus fossiles, X, p. 119. 



a. Sj)ecies with articular faces of dorsal vertebra;, subround: 

 MOSASAURUS maximus, Cope. Plate XXXVII, fig. 15. 



Extinct Batraohia and Eeptilia of North America, 1870, p. 189, Plate XI, fig. 7. 



Greensand of No. 4 of New Jersey. 

 Mosasaueus dekayi, Bromi. Plate XXXVII, fig. 10. 



Letha?a Geognostica, 1838, from DeKay, in Annals of the New York Lyceum, III, p. 135. — 

 Mosasaurus major, DeKay, Geological Survey of New York, 1841. — ? M. carolinensis and 

 ? M. coupcrii, Gibbes, Smithsonian Contributions to Knowledge, vol. II, p. 6, plate. — 

 Mosasaurus mUchillii, Leidy, Cretaceous Eeptiles of the United States, 1865, p. 118, 

 plates pro parte ; Proceedings of the Academy of Natural Sciences, Philadelphia, 1859, 

 p. 90. — Baseodon reversus, Leidy, Cretaceous Reptiles of the United States, p. 118, Plato 

 X, figs. 14-15. — ? Mosasaurus princcps, Marsh, American Journal of Science and Arts, 

 1869, 392; Cope, Extinct Batrachia and Reptilia of North America, 1870, 192, 235. 



Greensand of New Jersey, No. 4 and ?No. 5 ; South Carolina? (Gibbes). 

 Mosasaurus fulciatus, Cope. Plate XXXVII, fig. 13. 



Extinct Batrachia and Reptilia of North America, 1870, p. 194. 



Greensand of '? No. 4, New Jersey. 



act. Species with articular faces of dorsal vertebra; transversely oval : 

 Mosasaurus oarthrus, Cope. Plate XXXVII, fig. 17. 



Extinct Batrachia aud Eeptilia of North America, 1870, p. 190. 



Greensand of No. 5, New Jersey. 

 Mosasaurus missuriensis, Harlan. 



Ichthyosaurus missuriensis, Harlan, Transactions of the American Philosophical Society, 1834, 

 vol. IV, p. 405, Plate XX, figs. 3-8. — Mosasaurus neovidii, Goldfuss, Deutsche Natur- 

 forscher Versammluug zu Mainz, 1848, 1, 141. — Mosasaurus maxlmiliani, Goldfuss, Nova 

 Acta Acad., K. L. C Nat. Cur., XXI, p. 179, Plates VI, VII, VIII, IX.— Mosasaurus mis- 

 suriensis, Leidy, Proceedings of the Academy of Philadelphia, 1857, 90 ; Cope, Extinct 

 Batrachia and Reptilia, of North America 1870, p. 195, exclusive of specimen from 

 Kansas. 



Cretaceous, ? No. 4, of the Missouri River. 

 Mosasaurus depressus, Cope. Plate XXXVII, fig. 12. 



Extinct Batrachia and Reptilia of North America, 1870, 190. 



Greensand, No. 4 or 5 ?, New Jersey. 



