Pentlandia macroptera (Traquair)
Two heads showing the cranial shield (© NMS).
This dipnoan is a small to medium sized fish (although few examples are known of specimens over 30 cm, see picture at the top) and was the most common fish in the Eday Flags. It had tooth plates that looked similar to Dipterus. The fish is recently described by Tom Challands et al. (2016). It looks much like the Devonian lungfish Scaumenacia curta from Miguasha, Canada. Both species have no cosmine on their scales and head plates.