What is "styloichthys"

Styloichthys ( Greek: stylo "pillar" and ichthys "fish"; "Pillar fish") is a prehistoric sarcopterygian, lobe-finned fish which lived during the Early Devonian ( Lochkovian) period of East Yunnan, South China.

Because it is clear that the jaws and skull of Styloichthys share many derived features with coelacanthiformes it is placed as the oldest coelacanth.