116 



W. C. Knight — New Jurassic Yertebrates. 



transverse sections. Anterior caudles are flattened beneath 

 and have two large circular facets for the articulation of the 

 chevrons ; neural arches firmly attached to centra. The basal 

 phalanges have compressed, angular shafts, their shape depend- 

 ing largely upon their position in the paddle. Those in the 

 central region approach a quadrangular section ; while those on 

 the exterior are Y-shaped in cross-section with the opening of 

 the Y to the interior of the paddle. Terminations of pha- 

 langes rugose and strongly biconvex. 



Measurements. 



Length of fragment of lower jaw 



Depth of fragment of lower jaw . _ 



Length of teeth about . . 



Transverse diameter of teeth at base of striatums.. 



Length of striated portion 



Dorsal vertebra. 



Length 



Width 



Height to neural platform 



Postei'ior cervical vertebra. 



Length 



Width 



Height to neural platform 



Height of process from neural platform 



Caudle vertebra (anterior). 



Length 



Width 



Height of neural platform 



Jrhalanges. 



M. 



Basal. 



large. 



Length .. 



•049 



Width, distal end 



•0'22 



Width, proximal end 



•023 



Width of shaft 



•015 



Intermediate. 





Length ... 



•035 



Width, distal end 



•020 



Width, proximal end 



■022 



Width of shaft 



•013 



Terminal (nearly). 





Length 



•025 



Width, distal end 



•012 



Width, proximal end 



•013 



Width of shaft 



•008 



M. 

 280 

 035 

 049 

 006 

 014 



048 

 055 

 045 



050 

 055 

 045 

 090 



029 

 046 

 034 



medium. 

 .. -045 

 .. -020 

 .. '020 

 .. -012 



030 

 018 

 019 

 013 



021 

 012 

 013 



007 



This animal had a long neck and large paddles ; but did not 

 attain a length of over fourteen to sixteen feet. It was dis- 



