China X (no citation) nests between Eudimorphodon + Campylognathoides and Changchengopterus (below).

Changchengopterus pani (Lü 2009 CYGB 0036) Middle Jurassic ~170 mya ~12 cm snout to vent length was originally and correctly assigned to the base of the Dorygnathus clade. It was a tiny pterosaur derived from a sister to Eudimorphodon B Sp 1994 and phylogenetically preceded Sordes and Dorygnathus. Like these B Sp 1994 and Sordes, Changchengopterus was quite small, giving more credence to the adult status of these three taxa.

Distinct from B Sp 1994, the caudals were shorter and more gracile.

The coracoid was longer, subequal to the scapula. The humerus was longer. Fingers I-III were elongated.

The prepubis was like a hockey stick but perforated. Metatarsal II was the longest. Digits II-IV were subequal. Pedal 5.1 was robust and p5.2 was curved.

Orientognathus chaoyngensis (Lü et al. 2015, Late Jurassic) is known from a complete but slightly disarticulated skeleton. Originally it was not precisely nested. Here it nests between Changchengopterus and Sordes, but was much larger than both.

The PMOL-AP00010 specimen (above on right) was referred to Changchengopterus by Zhou and Schoch 2011, but it nests within the Wukongopteridae close to Pterorhynchus.

Lü J-C 2009. A New Non-Pterodactyloid Pterosaur from Qinglong County, Hebei Province of China. Acta Geologica Sinica 83(2):189-199.

Lü J, P H-Y, We X-F, Chan H-L and Kundrat GM 2014. A new rhamphorhynchid pterosaur (Pterosauria) from Jurassic deposits of Liaoning Province, China. http://www.biotaxa.org/Zootaxa/article/view/zootaxa.3911.1.7/0

Zhou C-F and Schoch RR 2011. New material of the non-pterodactyloid pterosaur Changchengopterus pani LÜ, 2009 from the Late Jurassic Tiaojishan Formation of western Liaoning. N. Jb. Geol. Paläont. Abh. 260/3, 265–275 published online March 2011.

wiki/Changchengopterus