POTTHOFF ET AL.: DEVELOPMENT OF SCOMBROID FISHES 



Sequence of fin and associ- 

 ated pterygiophore develop- 

 ment. 



First anteriormost dorsal and 

 anal pterygiophore develop 

 from one or two pieces of carti- 

 lage. 



Number of initial places of 

 ossification along vertebral 

 column; centra develop from 

 saddle-shaped ossifications at 

 bases of neural and haemal 

 arches. 



1. Second dorsal and anal Dorsal 

 concurrently. piece. 



2. First dorsal. 



and anal from one 4;Yes 



1. First dorsal. 



2. Second dorsal and anal 

 concurrently. First dorsal 

 separated from second 

 dorsal during part of devel- 

 opment. 



Dorsal from one piece, anal 

 from two pieces. 



2;Yes 



First dorsal. 



Second dorsal and anal 

 concurrently. First dorsal 

 separated from second 

 dorsal during part of devel- 

 opment. 

 First dorsal. 



Second dorsal and anal 

 concurrently. Not known if 

 first dorsal is separated 

 from second dorsal during 

 part of development. 



First dorsal. 



Second dorsal and anal al- 

 most concurrently. First 

 dorsal separated from sec- 

 ond dorsal during part of 

 development. 



Dorsal probably from one 4;Not known 

 piece, anal not known. 



Dorsal from one piece, anal 2?;Yes 

 probably from two pieces. 



Dorsal from one piece, anal 2;Yes 

 from two pieces. 



1. First dorsal. 



2. Second dorsal and anal 

 concurrently. First dorsal 

 not separated from second 

 dorsal during development. 



Dorsal from one piece, anal 

 from two pieces. 



2;No 



1. 



Second dorsal and anal 

 concurrently. 



First dorsal. First dorsal 

 and first anal nor separated 

 from second dorsal and 

 second anal during devel- 

 opment. 



Second dorsal and anal 

 concurrently. 



First dorsal. Separation or 

 continuity of first and sec- 

 ond dorsals not known. 



Variable, dorsal and anal may 1;No 

 develop from one or two 

 pieces. 



Dorsal and anal from two ? ; N o 

 pieces. 



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