236 



SUPPLEMENT. 



Order DINOSAURIA (supra, i. p. 131). 

 Suborder SAUROPODA (supra, i. p. 131). 



Family CETIOSAURID^] {supra, i. p. 133). 



Genus CARDIODON, Owen l . 



Founded upon teeth, which are of comparatively small size, with 

 short, broad, and highly incurved crowns, of which the enamel is 

 marked by distinct vertical rugae. 



It has been suggested that these teeth belong to Cetiosaurus oxoni- 

 ensis (supra, ii. p. x), one of them having been figured on page 253 

 of Phillips's ' Geology of Oxford ' under that name — in which case 

 the present name should supersede Cetiosaurus. They would, 

 however, agree better in relative size with the vertebra described 

 as Bothriospondylus ?°obustus (supra, i. p. 171), which appears 

 to be of a longer type and has a shallower fossa than the dorsals 

 of C. ooooniensis. 



Cardiodon rugulosus, Owen 2 . 

 Syn. (?) Bothriospondylus robustus (supra, i. p. 171). 



The type species. 



Hab. Europe (England). 



R. 1527. The imperfect crown of a tooth ; from the Great Oolite 

 (Lower Jurassic) of Cirencester. When entire this speci- 

 men must have agreed closely with the type tooth figured 

 in Owen's ' Odontography,' pi. 75 a. figs. 7, a, b. 



Presented by Prof. G. 8. BouJger, 1889. 



Genus MOROSAURUS, Marsh 3 . 



Apparently nearly allied to Cetiosaurus, but with a relatively 

 shorter humerus. In M. lentus, Marsh 4 , the arches of the dorsal 

 vertebrae are extremely long. 



1 Odontography, pt. iii. p. 291 (1845). 



2 Ibid. pi. 75 A. fig. 7 (1845). This plate was issued with the third part of 

 the work. 



3 Amer. Journ. ser. 3, vol. xv. p. 242 (187S). 



4 Ibid. vol. xxxvii. p. 333 (1889). 



