Germanodactylidae is a controversial group of
pterosaurs
Pterosaurs are an extinct clade of flying reptiles in the Order (biology), order Pterosauria. They existed during most of the Mesozoic: from the Late Triassic to the end of the Cretaceous (228 million to 66 million years ago). Pterosau ...
within the suborder
Pterodactyloidea
Pterodactyloidea ( ; derived from the Greek words ''πτερόν'' (''pterón'', for usual ''ptéryx'') "wing", and ''δάκτυλος'' (''dáktylos'') "finger") is one of the two traditional suborders of pterosaurs ("wing lizards"), and contai ...
. It was first named by
Yang Zhongjian
Yang Zhongjian, also Yang Chung-chien (; 1 June 1897 – 15 January 1979), courtesy name Keqiang (), also known as C.C. (Chung Chien) Young, was a Chinese paleontologist and zoologist. He was one of China's foremost vertebrate paleontologists. ...
in 1964, and given a formal
phylogenetic
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical dat ...
definition in 2014 by Brian Andres, James Clark, and Xu Xing. They defined it as the least inclusive
clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...
containing ''
Germanodactylus cristatus
''Germanodactylus'' ("German finger") is a genus of germanodactylid pterodactyloidea, pterodactyloid pterosaur from Upper Jurassic-age rocks of Germany, including the Solnhofen Limestone. Its specimens were long thought to pertain to ''Pterodacty ...
'' and ''
Normannognathus wellnhoferi'', which they considered to be close relatives at the time.
However, more recent studies by the same researchers have found that these pterosaurs may be only distantly related.
Studies performed in the 2000s suggested this group it contained three genera: ''
Germanodactylus
''Germanodactylus'' ("German finger") is a genus of germanodactylid pterodactyloidea, pterodactyloid pterosaur from Upper Jurassic-age rocks of Germany, including the Solnhofen Limestone. Its specimens were long thought to pertain to ''Pterodacty ...
'', ''
Normannognathus'' and ''
Tendaguripterus''. Various studies have since placed these pterosaurs within the larger clades
Archaeopterodactyloidea
Archaeopterodactyloidea (meaning "ancient Pterodactyloidea") is an extinct clade of pterodactyloid pterosaurs that lived from the middle Late Jurassic to the latest Early Cretaceous periods (Kimmeridgian to Albian stages) of Africa, Asia, Europe a ...
,
[ ]Eupterodactyloidea
Pterodactyloidea ( ; derived from the Greek words ''πτερόν'' (''pterón'', for usual ''ptéryx'') "wing", and ''δάκτυλος'' (''dáktylos'') "finger") is one of the two traditional suborders of pterosaurs ("wing lizards"), and contai ...
, or Dsungaripteroidea, though it has also been recovered within the Ctenochasmatoidea
Archaeopterodactyloidea (meaning "ancient Pterodactyloidea") is an extinct clade of pterodactyloid pterosaurs that lived from the middle Late Jurassic to the latest Early Cretaceous periods (Kimmeridgian to Albian stages) of Africa, Asia, Europe a ...
. In several 2010s studies, the supposed "germanodactylid" species were not necessarily found to form a natural group with each other, and even the genus ''Germanodactylus
''Germanodactylus'' ("German finger") is a genus of germanodactylid pterodactyloidea, pterodactyloid pterosaur from Upper Jurassic-age rocks of Germany, including the Solnhofen Limestone. Its specimens were long thought to pertain to ''Pterodacty ...
'' itself was discovered to be likely paraphyletic
Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ...
, causing one of its component species to be renamed ''Altmuehlopterus
''Altmuehlopterus'' (meaning "Altmühl River wing") is a genus of pterosaur belonging to the Pterodactyloidea. It lived in the Late Jurassic of what is now Germany. It was formerly known as "Daitingopterus" (meaning "Daiting Wing"), a ''nomen nud ...
''. This would render the name Germanodactylidae synonymous with some other clade, such as Eupterodactyloidea
Pterodactyloidea ( ; derived from the Greek words ''πτερόν'' (''pterón'', for usual ''ptéryx'') "wing", and ''δάκτυλος'' (''dáktylos'') "finger") is one of the two traditional suborders of pterosaurs ("wing lizards"), and contai ...
or Lophocratia
Pterodactyloidea ( ; derived from the Greek words ''πτερόν'' (''pterón'', for usual ''ptéryx'') "wing", and ''δάκτυλος'' (''dáktylos'') "finger") is one of the two traditional suborders of pterosaurs ("wing lizards"), and contai ...
.
Classification
Below is a cladogram
A cladogram (from Greek language, Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an Phylogenetic tree, evolutionary tree because it does not s ...
showing the results of a phylogenetic
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical dat ...
analysis presented by Longrich, Martill, and Andres, 2018.[
]
References
{{Taxonbar, from=Q517744
Pterodactyloidea
Pterosaur families