1 
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ORTHOCERAS 
ORTHOCERAS 
ORTHOCERAS 
ORTHOCERAS 
ORTHOCERAS 
LIST OF CUTS IN THE 
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poLitumM, Apex AND PRoroconcH . 
TRUNCATUM, TRUNCATED END AND Ptiue 
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UNGINS, CICATRIX AND APEX 
POLITUM, APEX 
Vicmeen ROCK RAS InMMIRIGHT 3 7. 3. 6, 
CALOCERAS APLANATUM 
CALocERAS NEWBERRYI 
CALOCERAS ORTONT 
ARNIOCERAS NEVADANUM 
ASTEROCERAS OBTUSUM, VAR. QUADRAGONATUM 
Pet. 
Figures 1-5, page 10 
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