anterior nerve foramen 

 mesocoracoid cartilage 



anterior margin 



radials ^'^ '°y' 



posterior nerve foramen 

 coracoid cartilage 



A LEPISOSTEUS 



reaxial radial (propterygium) 

 mesopterygium 



interclavicle 



C ACIPENSER 



metapferygium' 



D POLYPTERUS --^.^r-^^^.^::^ 



distal radials 



^11 



postcleithrum 



postcleithral scales 



distal rodial anterior margin 



basal radial-^ ^^^^'" ^^^^ 



cleithrum 



postpectorals 



E' 



tm rays 



postpectorals 

 anterior margin 



PERCH 



SALMON 



Figure 6-64. Medial aspect of the pectoral girdle and base of limb shov/ing variations in 

 scapulocoracoid development. A, Lepisosfeus,- B, Amia,- C, Acipenser,- D, Polypterus,- E, Perco (Perch); 

 E', details for base; F^ Sa/mo. 



BILATERAL APPENDAGES * 185 



