98 



THE DESEADO FORMATION OF PAT AGON I A 



The atlas and axis are wanting, and the characteristics 

 of the other cervicals have been given under the generic 

 description. 



Measurements, Specimen No. 3291. 



Cervical 3, length of centrum 



Cervical 5, length of centrum 



Cervical 6, length of centrum 



Cervical 6, height from base of centrum to top of spine 



Cervical 7, length of centrum 



Cervical 7, height from base of centrum to top of spine 



18 mm. 

 18 mm. 

 21 mm. 

 74 mm. 

 21 mm. 

 55 mm. 



The first three or four of the thoracic vertebrae are rep- 

 resented only by their neural arches and spines. There 



Fig. 56. Cervicals, 5, 6 and 7 — 1/2 natural 

 size. 



Fig. 57. Dorsal 6 and 7 — 1/2 nat- 

 ural size. 



were at least fifteen in the series, for 1 have that number 

 represented, but more probably the number was sixteen as 

 in the case in Adinothcriiim. Typical vertebrae measure: 



Specimen 3291 



Thoracic 3, langth of centrum 



Thoracic 3, height from base of centrum to spine 



Thoracic 6, length of centrum 



Thoracic 6, height from base of centrum to spine 



Thoracic 14, length of centrum 



Thoracic 14, height from base of centrum to spine 



21 mm. 

 56 mm. 



22 mm. 

 79 mm. 

 26 mm. 

 65 mm. 



Tn my series, there are six lumbars, which is one more 

 than is credited to Adinothcriiim, though in that genus the 



