316 



PETRIFACTIONS AND THEIR TEACHINGS. CHAP. III. 



number of the cervical and anterior dorsal vertebrae, eleven 

 ribs, and the bones of the pectoral arch almost in juxta- 

 position ; with numerous dermal scutes and spines ; but there 

 are no vestiges of the cranium, jaws, teeth, or bones of the 

 extremities. 



LIGN. 66. PART OF THE SKELETON OF THE HYLJEOSAURUS ; FROM TILGATE 

 FOREST. 



(Length of the specimen tyfeet.) 



1. Cervical vertebrae. 



2. Dorsal vertebras. 



3. Ribs : for the most part perfect, and but little displaced. 

 4, 4, 4. &c. Dermal spines. 



5. 5. 5. Three very large Dorsal dermal Spines ; 15 inches in length. 



6. 6. The Coracoid bones. 



7. 7. The Scapula: ; the heads of these bones, united to the corre- 



sponding Coracoids, are the only parts seen. 



Vertebrae. " Of the cervical, the remains of five are recog- 

 nisable. The compressed bony mass at the upper end of the 

 spinal column, are probably the remains of two vertebrae ; 

 then follows one that is compressed, but its outline is denned. 

 The succeeding vertebra is entire ; it has two tubercles for the 

 attachment of the costal processes, the transverse processes are 

 short and very strong : this bone is 1 -7 inch long and 2 inches 

 wide. 



The seventh cervical is much crushed ; it has traces of the 

 left lateral apophysis. 



The first dorsal vertebra is entire, it is 2 inches long, and 

 2*2 inches wide at the extremities; it is depressed laterally, 



