830 SYSTEMATIC SYNOPSIS OF FOSSIL BIBBS. 



" In its inaiu features, the present specimen resembles the skull of the Ratitm, more than 

 that of any existing birds. Other parts of the skeleton will doubtless show still stronger 

 reptilian characters. 



" In the matrix attached to this skull, a single tooth was found, which most resembles the 

 teeth of birds, especially those of Ichthyornis. It is probable that Laopteryx possessed teeth, 

 and also biconcave vertebra?. 



" The specimen here described, and others apparently of the same species, were; found in 

 the upper Jurassic of Wyoming Territory, in the horizon of the Atlantosaurus bods." 



