sentences:  "latidens" most similar to those of the pterosaurs "Scaphognathus" and "Dimorphodon", and even considered it a modified form of the former.Later writers classified it among the short-tailed pterodactyloids, and from the 1980s and onwards, it was generally found to be closest to "Ornithocheirus" and "Pteranodon", based on computerised phylogenetic analyses.In 2003, two competing schools of pterosaur classification emerged, that of David Unwin and that of Alexander W. Kellner; both found "Istiodactylus" to be a member of the group Ornithocheiroidea, but the exact configuration and content of this group has varied between studies.