484 PROCEEDINGS OF THE NATIONAL MUSEUM. vou41. 



On the anterior end is evidence of a zygospliene articulation, and 

 although somewhat rudimentary, it appears to have been fimctional. 

 In the weakness of tliis articulation this vertebra approaches those 

 of Platycarpus and Plioplatycar'pus. 



The general character and proportions of this vertebra are well 

 shown in the figures, and it appears unnecessary to further describe 

 them. 



Measurements of vertebra. 



mm. 



Greatest length of centrum 61 



Greatest width anterior end 36 



Greatest width posterior end 33 



Greatest depth posterior end 27 



Greatest depth anterior end 29 



Greatest width transverse process 87 



RelationsMps. — The fragmentary nature of the type-specimen 

 makes it impossible to say much of the relationships of this form, 

 although the manner of tooth rephicement and other characters of 

 the maxilla, frontal, presplenial, and vertebra indicate Globidens to 

 be a true member of the Pythonomorpha. 



The short, massive maxilla and broad, heavy frontal give evi- 

 dence of tliis animal having a short, broad, heavy skidl of the Plcv- 

 tycarpus or Brachysaurus type. The presence on the one vertebra 

 found of a small but probably functional zygospliene articulation 

 would further indicate its affinity with Platycarpus, and on account 

 of the characters enumerated above, Globidens is referred for the 

 present to the family Platycarpinse. 



EXPLANATION OF PLATES. 



Plate 39. 



Side view of left maxilla of Globidens alabamacnsis, | natural size. Type-specimen, 

 Cat. No. 6527, U.S.N.M. 



Plate 40. 



Oblique view of dental border of left maxilla of Globidens alabamaensis, | natural 

 size. Type-specimen, Cat. No. 6527, U.S.N.M. 



