The Darwinopteridae display a mosaic of features for both Rhamphorhynchoid and Pterodactyloid species. For this reason the family is considered an intermediate between the two suborders.
These pre-pterodactyloid species are middle Jurassic in age. This is a time where there are few fossils available in the sediments, so the full picture of this transition is not clearly understood.
Darwinopterus - Darwins wing