This locality is referred to the Autissiodorensis ammonite biozone of the lower part of the Kimmeridge Clay Formation, dating to the early Kimmeridgian stage of the Late Jurassic, about 155.7-153 million years ago.

The rostral index sensu Naish & Martill of this snout, in this case its length divided by its maximum height, is 5.4, the highest value known for any pterosaur.

The crest starts above the twelfth tooth position; its limit at the back is unknown because of damage but it is considered unlikely that it extended as far as the eyes, the roof of the skull not showing any trace of it.

Today it is known however that more basal groups had comparable heads, so the describers placed Cuspicephalus as a member of the more general Monofenestrata.

A more thorough analysis published in 2015 found that Cuspicephalus was likely a primitive monofenestratan pterosaur, and, specifically, a member of the group Wukongopteridae.