i'v 



Orbits blackened by 

 pigment 



Pineal eve 



-^-.Mandible 



Interclavicle — 



Spines ot \ertebra? 



Centra of verteba- 



Tibia 



Femur . -' 



Impression of the fleshy and. 



membranous |iaits of 



the tail. 



Scapula and clavicle 



Humerus 



Ribs 



Ventral scutellae 



Femur 



--^_ Fibula 



~'~-- Ilium 



Banded color markings 

 on tail 



Impressions of cartilagi- 

 nous vertebrae 



Dorsal lateral line 



Median lateral line 



Drawing X3.5. of type specimen of i\ticrerpeto7i caudatum Moodie, from 

 the Coal Measures of Mazon Creek, Illinois, showing skeletal elements, 

 form of head and tail, the lateral-line sense organs, banded color- 

 markings, and ventral scutellae. On the edges of the tail impression 

 are indications that in life the tail had a thin fold of skin above 

 and below the fleshy portion, much as in the larvae of Amhlystovia at 

 the present day. 



