Trophic relations of Devonian Fishes

A Middle Devonian fish assemblage from NE Estonia (Eifelian, Narva Stage), comprising more than 20 fishes andsome invertebrates, is analysed from the aspect of trophic relations. It is concluded that many common food items (e.g., several soft bodied invertebrates, arthropods etc.) have been subjected to taphonomic loss. The presence of large and very large flat-bodied fishes (psammosteid heterostracans and the arthrodire Homostius), is believed to show that the assemblage came from a shallow marine environment.