Fig. 6

Morphological variation of pectoral fins in Elopomorpha, Osteoglossomorpha and Otomorpha. The black circle indicates an increase in proximal radials. The white circle indicates a decrease in proximal radials. The white circle including a black circle indicates the increase and decrease in proximal radials. The white triangle indicates the loss of the mesocoracoid. The black triangle shows the change in connections of distal radials and fin rays. The cladogram (phylogenic relationships) was drawn based on [19] and [20]