The genus is based on holotype Musée Géologique Cantonal de Lausanne 59'583, the left front portion of a skull and the associated, but not articulated to it, lower jaws.

After its rounded tip it gradually curves downwards again towards the skull top; its further shape is unknown because at this point the fossil ends.

The crest is flat, running down the midline of the upper jaw and shows a fibrous texture that could be indicative of some covering, such as a horn sheath.

The tooth count is five per premaxilla; the number is at least nine for the maxilla, and at least fourteen per dentary: no reliable estimates can be given of the last two totals because the back of the head has been lost.

[2] In 2018 however, Longrich et al. found Normannognathus to be the sister taxon of Cycnorhamphus within the family Gallodactylidae, which in turn was within the Ctenochasmatoidea.