Eudimorphodon

Eudimorphodon is an extinct genus of pterosaur that was discovered in 1973 by Mario Pandolfi in the town of Cene, Italy and described the same year by Rocco Zambelli. The nearly complete skeleton was retrieved from shale deposited during the Late Triassic (mid to late Norian stage, 219-215 million years ago), making Eudimorphodon one of the oldest pterosaurs known. It had a wingspan of about . Eudimorphodon is known from several skeletons, including juvenile specimens.

==Discovery and species== thumb|left|Fossil at Museo di Scienze Naturali, Bergamo, specimens MCSNB 8959 a,b Eudimorphodon currently includes one species, the type species Eudimorphodon ranzii, which was first described by Zambelli in 1973. It is based on holotype MCSNB 2888. The specific name honors Professor Silvio Ranzi. A second species, Eudimorphodon rosenfeldi, was named by Dalla Vecchia in 1995 for two specimens found in Italy. However, further study by Dalla Vecchia found that these actually represented a distinct genus, which he named Carniadactylus in 2009. A third species is Eudimorphodon cromptonellus, described by Jenkins and colleagues in 2001. 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. Its specific name honors Professor Alfred Walter Crompton; the name is a diminutive because the exemplar is so small. In 2015 it was named as a separate genus Arcticodactylus by Alexander Kellner. Specimen BSP 1994 I 51, in 2003 referred to a cf E. ranzii, was in 2015 by Kellner made the genus Austriadraco.