supratemporal 

 intertemporal 

 postorbtta 

 parietal^ 

 postfronta 

 internasal 



prefrontals/^ 

 lacrimal 



splenlols 

 anterior medial gula 



marginal gulars 



median extrascapular ; ^ 



lateral extrascapular 

 tabular 



lateral gular 



Figure 4-32. The head and pectoral girdle of Ho/opfych(us f)emingi. (After Jarvik, 1960, 1948) 



extrascapular series 

 tabular 



supratemporal 



eithrum 



parietal 



nasal series 

 internasals 



nasal 

 openings 



clavicle 



Figure 4-33. The head of Lafimeria. (After Millot and Anthony, 1958) 



CHOANATE FISHES • 97 



