Tristichopterus alatus Egerton

 

This fish from the youngest fish-bearing Subgroup on Orkney. It resembles the well know species Eusthenoptheron foordi which has been described in great detail by Erik Jarvik.

It was a very fast swimming top predator. Probably the dipnoan Pentlandia macroptera was its prey.

Complete fish

Complete fish

Complete fish

Posterior part of the body showing the bones supporting the caudal fin (collection F.V.C.)

Reconstruction (© M.J. Newman)

Drawing of specimen (after Egerton, 1861)

Drawing of specimen (after Egerton, 1861)

Reconstruction (after Traquair, 1875)

Reconstruction of head (after Traquair, 1875)

Reconstruction of pectoral fin and cleithrum (after Traquair, 1875)

Reconstruction (after Watson, 1935 ©)