Pennaia pauliana Clarke 



Fig. I, 2 Cephala 



3 A pygidium with two thoracic segments attached, x 3 



4 The thorax and pygidium, showing the rounded ends 



of the anterior thoracic segments and 3 lappets of 

 the pygidium 



5 A nearly entire individual restored 



6 Thorax and pygidium of an incomplete specimen 

 Locality: Ponta Grossa, Sao Paulo, Brazil 



Calmonia signifer Clarke 



(See plate 9) 



Fig. 7 Cephalon restored, showing style and position of the 

 eyes and the small cheek spine 



8 Anterior structure of the head showing the short apical 



projection which is often obscured 



9 Internal cast of thorax and pygidium 

 10, II Pygidia with terminal spines 



Locality: Ponta Grossa, Sao Paulo, Brazil 



T56 



