Although it was a lobe-finned fish Strunius's fins were supported by fin rays, which are more associated with ray-finned fish. However, its skull was composed of two articulating halves, a feature characteristic of the lobe-finned rhipidistians. The skull was also divided by a deep articulation, with both halves probably connected by a large muscle, increasing the power of the bite.[1] The same system is seen in coelacanths and the better-known Eusthenopteron.