42 ROY L. MOODIE 
The bones of Micrerpeton, as in so many of the fossils from this 
locality, have been replaced by a white friable mineral which is 
TSTG5 oa: 
Fic. 2 
Fic. 1.—Impression of. Micrerpeton caudatum on the Mazon Creek nodule. The 
median lateral line is distinct and evidences of the ventral scutellation may be seen on 
the upper side of the vertebral column. Two and one-third times natural size. 
Fic. 2.—A photograph of the ventral scutellation of Micrerpeton. X5. 
