All, I have got a strange looking osteostracan fish from Stjordalen Fm, Spitzbergen. It is Emsian. It is not identified but generally belongs to the elongated type of osteostarcan fish from that locality. As you can see it shows that a part of the exterior headshield layer is missing showing probably a viscelar/internal structures. Maybe it is an effect of predation or just a mechanical damage during formation of the fossil. Nevertheless, it is interesting. Pictures are not of the best quality but some internal
structures seem to be visible. It is a strange looking one.
Any comments or suggestions are very welcomed. Thanks, Tomasz