Archaeoistiodactylus

Archaeoistiodactylus linglongtaensis
Temporal range: Middle Jurassic, 160 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Order: Pterosauria
Suborder: Pterodactyloidea
Clade: Pteranodontoidea
Family: Istiodactylidae
Genus: Archaeoistiodactylus
Lü & Fucha, 2010
Species:  A. linglongtaensis
Binomial name
Archaeoistiodactylus linglongtaensis
Lü & Fucha, 2010

Archaeoistiodactylus is an extinct genus of pterosaur from the Middle Jurassic of China. It is known from an incomplete skeleton with a partial skull and lower jaw recovered from rocks of the Tiaojishan Formation in western Liaoning, China. It was first named by Lü Junchang and Fucha Xiaohui in 2010 and the type species is Archaeoistiodactylus linglongtaensis. The authors of its description assigned Archaeoistiodactylus to the clade Breviquartossa and considered it to be more closely related to the istiodactylids than to any other group of pterosaurs; however, they considered it to be more primitive than the Cretaceous istiodactylids and regarded it as an ancestor, rather than member of istiodactylid pterosaurs.[1] Martill and Etches (2013) suggest that the holotype specimen might actually be a poorly preserved specimen of Darwinopterus.[2] Sullivan et al. (2014) considered the "distinctive midline tooth in the tip of the rostrum" of the holotype specimen to be a probable valid diagnostic feature of A. linglongtaensis; however, the authors considered it more likely that Archaeoistiodactylus was a basal monofenestratan than an istiodactylid.[3]

References

  1. Lü Junchang and Fucha Xiaohui (2010). "A new pterosaur (Pterosauria) from Middle Jurassic Tiaojishan Formation of western Liaoning, China". Global Geology 13 (3/4): 113–118. doi:10.3969/j.issn.1673-9736.2010.03/04.01.
  2. David M. Martill and Steve Etches (2013). "A new monofenestratan pterosaur from the Kimmeridge Clay Formation (Upper Jurassic, Kimmeridgian) of Dorset, England". Acta Palaeontologica Polonica 58 (2): 285–294. doi:10.4202/app.2011.0071.
  3. Corwin Sullivan, Yuan Wang, David W. E. Hone, Yuanqing Wang, Xing Xu and Fucheng Zhang (2014). "The vertebrates of the Jurassic Daohugou Biota of northeastern China". Journal of Vertebrate Paleontology 34 (2): 243–280. doi:10.1080/02724634.2013.787316.
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