Eudimorphodon was a pterosaur that was discovered in 1973 by Mario Pandolfi in the town of Cene, Italy and described the same year by Rocco Zambelli.

[6] It is based on a juvenile specimen with a wingspan of just 24 centimeters, MGUH VP 3393, found in the early nineties in Jameson Land, Greenland.

[7] In 1986 fossil jaw fragments containing multicusped teeth were found in Dockum Group rocks in western Texas.

[9] Eudimorphodon showed a strong differentiation of the teeth, hence its name, which is derived from ancient Greek for "true dimorphic tooth".

[9] Despite its great age, Eudimorphodon has few primitive characteristics[3] making the taxon of little use in attempting to ascertain where pterosaurs fit in the reptile family tree.

Basal traits though, are the retention of pterygoid teeth and the flexibility of the tail, which lacks the very long stiffening vertebral extensions other long-tailed pterosaurs possess.

The paucity of early pterosaur remains has ensured that their evolutionary origin continues to be a mystery, with different experts suggesting affinities to dinosaurs, archosauriformes, or prolacertiformes.

[12] Preondactylus buffarinii Austriadactylus cristatus Peteinosaurus zambellii Raeticodactylus filisurensis Caviramus schesaplanensis Arcticodactylus cromptonellus Carniadactylus rosenfeldi Eudimorphodon ranzii In 2020 however, a study upheld by Matthew G. Baron about early pterosaur interrelationships found Eudimorphodon to group with the clade Novialoidea, both within the clade called Lonchognatha.