This species can be found in the sediments above the Sandwick Fish Bed, from the Upper Stromness Flags up to the top of the Rousay flags. It is similar to Glyptolepis leptopterus, but longer. Like that species it is poorly known.

This porolepiform fish can be only be found on Orkney in the Sandwick Fish Bed. It was a short, plump fish, but is poorly known. Shown below is a part of the body, a complete specimen and loose scales. It was a top predator and very rare in the Sandwick Fish Bed.

This porolepiform fish, received its new name by Per Ahlberg in his 1989 unpublished thesis on Glyptolepis from Scotland (see references).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).