Rhamphorhynchidae

Rhamphorhynchidae is a group of early pterosaurs named after Rhamphorhynchus, that lived in the Late Jurassic. The family Rhamphorhynchidae was named in 1870 by Harry Govier Seeley.[10] Members of the group possess no more than 11 pairs of teeth in the rostrum, a deltopectoral crest that is constricted at the base but expanded at the distal end, and a bent phalange on the fifth toe.[11][12]

Rhamphorhynchids Temporal range: Early-Late Jurassic,
Fossil specimen of Rhamphorhynchus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Order:	†Pterosauria
Clade:	†Novialoidea
Clade:	†Breviquartossa Unwin, 2003
Family:	†Rhamphorhynchidae Seeley, 1870
Type species
†Pterodactylus longicaudus Münster, 1839
Subgroups[1]
†Dolicorhamphus †Klobiodon †Parapsicephalus †Rhamphorhynchinae †Bellubrunnus[2] †Cacibupteryx †Dorygnathus †Harpactognathus †Nesodactylus †Orientognathus[3] †Qinglongopterus[4] †Rhamphorhynchus †Angustinaripterini[5] †Angustinaripterus †Dearc †Sericipterus †Scaphognathinae[6] †Fenghuangopterus[7] †Jianchangnathus[8] †Jianchangopterus[9] †Scaphognathus
Synonyms
Scaphognathidae Hooley, 1913

Rhamphorhynchidae traditionally contains two subfamilies: the Rhamphorhynchinae and the Scaphognathinae. While not recovered as distinct clades by all analyses, there do appear to be traits uniting members of each group.[1][12] Rhamphorhynchines are more common, were lightly built, and had jaws ending in pointed tips that contained more teeth, which are often procumbent (pointed forward). Scaphognathines are comparatively quite rare, were more robust skeletally, and had shorter wing proportions. The broad-tipped skulls of scaphognathines held fewer teeth which were widely spaced and vertically oriented in the jaw.[12]