830 
SYSTEMATIC SYNOPSIS OF FOSSIL BIBDS. 
" In its main features, the present specimen resembles the skull of the Batita;, 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 vertebrae. 
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 beds." 
