Conularia ulrichana Clarke 



Fig. I Enlarged fragment showing nature of ornament 



2 A small example, x 2 



3 A characteristic example 

 Locality: Tybagy, Sao Paulo, Brazil 



Conularia africana Salter 



Fig. 4 An undistorted fragment 



5 A well-developed, nearly entire specimen 

 Locality: Ponta Grossa, Brazil 



Hyolithus subaequalis (Salter) 



Fig. 6, 7 The two sides, wath operculum in place 

 Locality: Tybagy, Sao Paulo, Brazil 



Orthoceras sp. (cf. gamkaensis Reed) 



Fig. 8 Part of a shell retaining fine concentric surface ornament 

 Locality: Ponta Grossa, Brazil 



Kionoceras zoilus Clarke 



Fig. 9 The only example observed 



Locality: Ponta Grossa, Brazil 



162 



