On n new Type of Teleostean Cartilaginous Pectoral Girdle found in young Clupeids

S ummary: :
In the young of Chipea sprattus, C. harengus , and C. pilchardus about 20 to 30 mm. in length, the right:Ind left coracoid regions fuse to a solid cartilnginous ventral bar, which becomes bent and again subdivided in later stages. This fusion is probably a specialisattion to strengthen the support of the pectoral fins before the complete developinent of the dermal bones of the pectoral girdle.