﻿GEOL. 
  SOC. 
  AM., 
  MEMOIR 
  76 
  

  

  PALMER, 
  PL. 
  10 
  

  

  fk 
  

  

  ^ 
  

  

  10 
  

  

  COMPSOMYAX, 
  NEMOCARDIUM, 
  AND 
  LEPTON 
  

  

  