Jianchangnathus

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Jianchangnathus
Temporal range: Middle Jurassic, 160 Ma
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Pterosauria
Family: Rhamphorhynchidae
Subfamily: Scaphognathinae
Genus: Jianchangnathus
Cheng et al., 2012
Species: J. robustus
Binomial name
Jianchangnathus robustus
Cheng et al, 2012

Jianchangnathus is an extinct genus of basal pterosaur from the Middle Jurassic Tiaojishan Formation of northeastern China.[1]

Naming[edit]

Jianchangnathus was first described and named by Cheng Xin, Wang Xiaolin, Jiang Shunxing and Alexander W.A. Kellner in 2012 and the type species is Jianchangnathus robustus. The generic name combines a reference to Jianchang County with a Greek γνάθος, gnathos, "jaw". The specific name means "robust" in Latin.[1]

Jianchangnathus is known from a single fossil skeleton, holotype IVPP V16866, recovered near Linglongta, in Jianchang County.

Description[edit]

Autapomorphies of Jiangchangnathus include: a convex top margin of the lower jaw; a large front branch of the jugal; and the first three pairs of teeth of the lower jaws pointing strongly forwards. Its describers found it to share several features with Scaphognathus, including a high front end of the lower jaws, a pear-shaped lower temporal fenestra with the broad end below and teeth in the maxilla of the upper jaw that have a space equal to that of three toothsockets between them.[1]

Phylogeny[edit]

Jianchangnathus was assigned by the describers to the Scaphognathidae.[1]

See also[edit]

References[edit]

  1. ^ a b c d Xin Cheng; Xiaolin Wang; Shunxing Jiang; Alexander W.A. Kellner (2012). "A new scaphognathid pterosaur from western Liaoning, China". Historical Biology. 24. doi:10.1080/08912963.2011.635423.