This porolepiform fish, received its new name by Per Ahlberg in his 1989 unpublished thesis on Glyptolepis from Scotland (see references). It is one of the biggest fish in the lake and a fierce predator. The fish is very rare, as is often the case with predators at the top of the food chain. More work needs to be done on this species. This porolepiform can be compared with the genus Laccognathus from Latvia and Estonia and more recently from Canada, (Downs 2011).
In the collections of the NMS an almost complete head of this species is stored. On the ventral side some scales are visible (see one figured below). This head was first described by Thomson in 1966 as Glyptolepis paucidens. Typical for the scales of this species, is that they have only tubercles and no ridges running from the centre to the scale to the edge, like the scales of Glyptolepis. In the general part on porolepiforms, a thin section through a scale (see below) is shown.
Here we show a picture of such a scale. The dermal plates are also covered with tiny tubercles while the plates from Glyptolepis are smooth.