Caelidracones

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Caelidracones
Temporal range: Middle JurassicLate Cretaceous, 164–66  Ma
Pteranodon sternbergi pair.jpg
Replica of Geosternbergia sternbergi skeletons, female (left) and male (right)
Tropeognathus mesembrinus MN 01.jpg
Skeletal reconstruction of Tropeognathus mesembrinus in the National Museum of Brazil
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Order: Pterosauria
Clade: Pterodactyliformes
Clade: Caelidracones
Unwin, 2003
Subgroups [1]

The Caelidracones is a group of pterosaurs. [2]

The clade Caelidracones was defined in 2003 by David Unwin as the group consisting of the last common ancestor of Anurognathus ammoni and Quetzalcoatlus northropi , and all its descendants. [3]

The name Caelidracones means "sky dragons" from Latin caelum, "heaven", and draco, "dragon" and is a reference to Harry Govier Seeley's 1901 book, Dragons of the Air.

Classification

In Unwin's original classification, the Caelidracones were considered the sister group of the Dimorphodontidae within the Macronychoptera and consist of the Anurognathidae and the Lonchognatha. [3] More recent studies of pterosaur relationships have found anurognathids and pterodactyloids to be sister groups, which would limit Caelidracones to just those two clades. [1]

Below is a cladogram showing the results of a phylogenetic analysis presented by Longrich, Martill, and Andres, 2018. This study found the two traditional groupings of ctenochasmatoids and kin as an early branching group, with all other pterodactyloids grouped into the Eupterodactyloidea. [4]

 Caelidracones 

Anurognathidae AnurognathusDB white background.jpg

  Pterodactyloidea  

Kryptodrakon Kryptodrakon.jpeg

Lophocratia
Archaeopterodactyloidea  

Germanodactylidae Altmuehlopterus DB.jpg

  Euctenochasmatia  

Pterodactylus Pterodactylus BMMS7 life.png

Ctenochasmatoidea Pterodaustro BW.jpg

Eupterodactyloidea  

Haopterus

Ornithocheiroidea

Piksi

  Pteranodontoidea  

Ornithocheiromorpha LiaoningopterusDB flipped.jpg

Pteranodontia Pteranodon longiceps mmartyniuk wiki.png

  Azhdarchoidea  

Tapejaromorpha TapimpDB.jpg

Neoazhdarchia Quetzalcoatlus07.jpg

Related Research Articles

<i>Germanodactylus</i> Genus of germanodactylid pterosaur from the Late Jurassic

Germanodactylus is a genus of germanodactylid pterodactyloid pterosaur from Upper Jurassic-age rocks of Germany, including the Solnhofen Limestone. Its specimens were long thought to pertain to Pterodactylus. The head crest of Germanodactylus is a distinctive feature.

<span class="mw-page-title-main">Gallodactylidae</span> Family of ctenochasmatoid pterosaurs

Gallodactylidae is a group of pterosaurs within the suborder Pterodactyloidea. Gallodactylids differed from other related pterosaurs in several distinct features, including fewer than 50 teeth present only in the jaw tips, and rounded crests present on the rear portion of the skull and jaws but not near the ends of their snouts. At least some species possessed jaw flanges, possibly used to bissect hard-shelled prey.

Boreopterus is a genus of boreopterid pterodactyloid pterosaur from the Barremian-Aptian-age Lower Cretaceous Yixian Formation of Dalian, Liaoning, China.

<i>Siroccopteryx</i> Genus of anhanguerid pterosaur from the Early Cretaceous

Siroccopteryx is an extinct genus of anhanguerid pterodactyloid pterosaur, known from middle Cretaceous sediments in modern-day Morocco. Some researchers, such as David M. Unwin, consider the genus a junior synonym of Coloborhynchus.

Eoazhdarcho is a genus of azhdarchoid pterodactyloid pterosaur named in 2005 by Chinese paleontologists Lü Junchang and Ji Qiang. The type and only known species is Eoazhdarcho liaoxiensis. The fossil was found in the Aptian-age Lower Cretaceous Jiufotang Formation of Chaoyang, Liaoning, China.

<i>Feilongus</i> Genus of ctenochasmatid pterosaur from the Early Cretaceous

Feilongus is an extinct genus of ctenochasmatid pterodactyloid pterosaur from the Barremian–Aptian-age Lower Cretaceous Yixian Formation of Beipiao, Liaoning, China.

Kepodactylus is an extinct genus of ctenochasmatid pterodactyloid pterosaur from the Kimmeridgian-Tithonian-age Upper Jurassic Morrison Formation of Colorado, United States.

<span class="mw-page-title-main">Lonchodectidae</span> Family of pteranodontoid pterosaurs

Lonchodectidae or Lonchodraconidae is a group of pterosaurs within the clade Pterodactyloidea. It has variously been considered to be within Ctenochasmatoidea, Azhdarchoidea and Pteranodontia. They are notable for their high, conical tooth sockets and raised alveolar margins.

<span class="mw-page-title-main">Ornithocheiroidea</span> Clade of pterodactyloid pterosaurs

Ornithocheiroidea is a group of pterosaurs within the extinct suborder Pterodactyloidea. They were typically large pterosaurs that lived from the Early to Late Cretaceous periods, with fossil remains found all over the world except Antarctica.

<span class="mw-page-title-main">Dsungaripteroidea</span> Superfamily of reptiles (fossil)

Dsungaripteroidea is a group of pterosaurs within the suborder Pterodactyloidea.

<span class="mw-page-title-main">Azhdarchoidea</span> Superfamily of ornithocheiroid pterosaurs

Azhdarchoidea is a group of pterosaurs within the suborder Pterodactyloidea, more specifically within the group Ornithocheiroidea. Pterosaurs belonging to this group lived throughout the Early and Late Cretaceous periods, with one tentative member, Tendaguripterus, that lived in the Late Jurassic period. The largest azhdarchoids include members of the family Azhdarchidae, examples of these are Quetzalcoatlus, Hatzegopteryx, and Arambourgiania. The Azhdarchoidea has been recovered as either closely related to the Ctenochasmatoidea, as the sister taxon of the Pteranodontoidea within the Ornithocheiroidea, or within the Tapejaroidea, which in turn was also within the Ornithocheiroidea.

<span class="mw-page-title-main">Ornithocheiridae</span> Family of ornithocheiran pterosaurs

Ornithocheiridae is a group of pterosaurs within the suborder Pterodactyloidea. These pterosaurs were among the last to possess teeth. Members that belong to this group lived from the Early to Late Cretaceous periods, around 140 to 90 million years ago.

<span class="mw-page-title-main">Pteranodontia</span> Clade of pteranodontoid pterosaurs

Pteranodontia is an extinct group of ornithocheiroid pterodactyloid pterosaurs that lived during the Late Cretaceous period of North America and Africa. They were some of the most advanced pterosaurs, and possessed highly specialized cranial crests that may have served as sexual attraction, with males having a much larger crest.

<span class="mw-page-title-main">Boreopteridae</span> Family of pteranodontoid pterosaurs

Boreopteridae is a group of pterodactyloid pterosaurs from the Aptian-age Lower Cretaceous Yixian Formation of Liaoning, China.

<span class="mw-page-title-main">Germanodactylidae</span> Family of pterodactyloid pterosaurs

Germanodactylidae is a controversial group of pterosaurs within the suborder Pterodactyloidea. It was first named by Yang Zhongjian in 1964, and given a formal phylogenetic definition in 2014 by Brian Andres, James Clark, and Xu Xing. They defined it as the least inclusive clade containing Germanodactylus cristatus 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.

<span class="mw-page-title-main">Eupterodactyloidea</span> Infraorder of pterodactyloid pterosaurs

Eupterodactyloidea is an extinct group of pterodactyloid pterosaurs that existed from the latest Late Jurassic to the latest Late Cretaceous periods. Eupterodactyloids lived on all continents except Antarctica.

Alamodactylus is an extinct genus of nyctosaurid pteranodontoid pterosaur known from the Late Cretaceous of Texas, southern United States. It contains a single species, Alamodactylus byrdi.

<i>Kryptodrakon</i> Genus of pterodactyloid pterosaur from the Jurassic period

Kryptodrakon is an extinct genus of pterodactyloid pterosaur from the Middle to Late Jurassic with an age of approximately 162.7 million years. It is known from a single type species, Kryptodrakon progenitor. The age of its fossil remains made Kryptodrakon the basalmost and oldest pterodactyloid known to date.

<span class="mw-page-title-main">Ornithocheiromorpha</span> Clade of pteranodontoid pterosaurs

Ornithocheiromorpha is a group of pterosaurs within the suborder Pterodactyloidea. Fossil remains of this group date back from the Early to Late Cretaceous periods, around 140 to 92.5 million years ago. Ornithocheiromorphs were discovered worldwide except Antarctica, though most genera were recovered in Europe, Asia and South America. They were the most diverse and successful pterosaurs during the Early Cretaceous, but throughout the Late Cretaceous they were replaced by better adapted and more advanced pterosaur species such the pteranodontids and azhdarchoids. The Ornithocheiromorpha was defined in 2014 by Andres and colleagues, and they made Ornithocheiromorpha the most inclusive clade containing Ornithocheirus, but not Pteranodon.

<i>Tethydraco</i> Genus of ornithocheiroid pterosaur from the Late Cretaceous

Tethydraco is a genus of pterodactyloid pterosaur that lived during the Late Cretaceous period of what is now the area of present Morocco, about 66 million years ago. Tethydraco was originally assigned to the family Pteranodontidae. Subsequently described material suggested that it was an azhdarchid, and possibly synonymous with Phosphatodraco. The type and only species is T. regalis.

References

  1. 1 2 Andres, B.; Myers, T. S. (2013). "Lone Star Pterosaurs". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 103 (3–4): 383–398. doi:10.1017/S1755691013000303. S2CID   84617119.
  2. "†unranked clade Caelidracones Unwin 2003 (pterosaur)". Paleobiology Database. Fossilworks. Retrieved 27 April 2016.
  3. 1 2 Unwin, D. M. (2003). "On the phylogeny and evolutionary history of pterosaurs". Geological Society, London, Special Publications. 217 (1): 139–190. doi:10.1144/GSL.SP.2003.217.01.11. S2CID   86710955.
  4. Longrich, N.R., Martill, D.M., and Andres, B. (2018). Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. PLoS Biology, 16(3): e2001663. doi : 10.1371/journal.pbio.2001663