GILMORE: NOTES ON OSTEOLOGY OF BAPTANODON orl 
probably show some extreme specializations, as the time separating the Benton from 
the Baptanodon beds is considerable.” 
Moreover, it would be of interest to note the presence of this group in the Cre- 
taceous of this country, which has already been shown to be the geological range of 
the closely allied European genus Ophthalmosaurus. 
U.S. NatTionaL MusEuM, 
February 6, 1906. 
