PLATE VI. 



Tetrabclodon zvillistoiii. a, top view of skull showing a narrow, but 

 well-arched dome, flattish occiput, expanded anterior nares, and greatly 

 reduced nasals. Tool marks indicate restored parts, b, palatine view, 

 showing bifurcated maxillae, narrow posterior nares, and teeth, Nos. i, 

 2, 3, and 4. Tool marks at base of skull indicate restoration. 



