[dinosaur] Hongshanxi, new Jurassic lizard from China (free pdf)

Ben Creisler
[email protected]

A new paper in open access:

Free pdf:


Hongshanxi xiei gen. et sp. nov.

Liping DONG, Yuan WANG, Lijie MOU, Guoze ZHANG & Susan E. EVANS (2019)
A new Jurassic lizard from China.
in Steyer J.-S., in Augé M. L. & Métais G. (eds), Memorial Jean-Claude
Rage: A life of paleo-herpetologist.
Geodiversitas 41 (16): 623-641
doi: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.5252_geodiversitas2019v41a16&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=oRGqcycWEgpFkEh0fHCBoa7qmpfMjRUzf3pDxUiZJbg&s=7b5YI1Q9XneN354TBFydETG9wnxOOVefbffPO1jRodk&e= 
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Published on 13 September 2019




The Jurassic record of lizards in eastern Asia is poor by comparison with
that of the Cretaceous. In China, to date, the only confirmed records from
this period are an armoured lizard from Shishugou, Xinjiang Uygur
Autonomous Region, of probable Oxfordian age, and two unnamed juvenile
specimens from the slightly older, Callovian-Oxfordian, Daohugou locality
of Nei Mongol. Here we describe the first lizard from the locality of
Guancaishan, Jianping County, Liaoning Province. This locality is close to
Daohugou, and is considered to be of similar age. The new skeleton is
articulated and well-preserved. It is distinguished from other
Jurassic-Cretaceous lizards by a unique combination of derived characters,
notably a long frontal with posterior processes that clasp the short
parietal; cranial osteoderms limited to the lower temporal and supraocular
regions; and an elongated manus and pes. Phylogenetic analysis using
morphological data alone places the new taxon on the stem of a traditional
‘Scleroglossa’, but when the same data is run with a backbone constraint
tree based on molecular data, the new taxon is placed on the stem of
Squamata as a whole. Thus its position, and that of other Jurassic and
Early Cretaceous taxa, seem to be influenced primarily by the position of
Gekkota.


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