PLAT ELM. 
TiranicuTuys AGassizul, Newb. (p. 133). 
Fra. 1. Mandible, outside. 
2. Mandible, inside. 
TITANICHTHYS CLARKH, Newb. (p. 133). 
3. Mandible, outside. 
4, Mandible, inside. 
All one-quarter natural size, linear. 
1, 2, Cleveland shale, Sheffield, Lorain County, Ohio. 
3, 4, Cleveland shale, Berea, Cuyahoga County, Ohio. 
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