﻿Modiomorpha 
  austronotica 
  Clarke 
  

  

  Fig. 
  1,2 
  Sculpture 
  casts 
  of 
  right 
  and 
  left 
  valves 
  

  

  3 
  A 
  right 
  valve 
  

  

  4 
  Expanded 
  valves 
  in 
  juxtaposition 
  

   Locality: 
  Ponta 
  Grossa, 
  Brazil 
  

  

  Modiomorpha 
  ? 
  scaphula 
  Clarke 
  

  

  Fig. 
  5, 
  6 
  Right 
  and 
  left 
  sculpture 
  valves 
  

  

  Localities: 
  Ponta 
  Grossa 
  and 
  Tybagy, 
  Brazil 
  

  

  Phthonia 
  ? 
  epops 
  Clarke 
  

  

  Fig. 
  7 
  Right 
  valve 
  showing 
  surface 
  characters 
  

   8 
  Enlargement 
  of 
  surface 
  on 
  posterior 
  slope 
  

   Locality: 
  Jaguariahyva, 
  Brazil 
  

  

  Pholadella 
  cf 
  radiata 
  Hall 
  

  

  Fig. 
  9 
  Fragment 
  of 
  a 
  large 
  specimen 
  provisionally 
  referred 
  to 
  

   this 
  species 
  

   Locality: 
  Tybagy, 
  Brazil 
  

  

  Leptodomus 
  ulrichi 
  Clarke 
  

  

  Fig. 
  io, 
  ii 
  Left 
  valves 
  of 
  this 
  species 
  

  

  Locality: 
  Ponta 
  Grossa, 
  Brazil 
  

  

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