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New theropod ichnotaxon from Anhui Province, China



From: Ben Creisler
bcreisler@gmail.com

A new paper:


Lida Xing, Martin G. Lockley, Jianping Zhang, Hendrik Klein, Jeong Yul
Kim, W. Scott Persons IV, Masaki Matsukawa, Xinqi Yu, Jianjun Li,
Guanbao Chen & Yi Hu (2014)
Upper Cretaceous dinosaur track assemblages and a new theropod
ichnotaxon from Anhui Province, eastern China.
Cretaceous Research 49: 190-204
http://dx.doi.org/10.1016/j.cretres.2014.03.003
http://www.sciencedirect.com/science/article/pii/S0195667114000433


Several noteworthy Cretaceous tracksites are known in the Huizhou
District (Huangshan City) in the Yangtzee valley of southern Anhui
Province. These include some that have been known since the late 1970s
but have not been studied in detail until now. The footprints
described here occur in siliciclastic fluvial deposits in three
distinct horizons. The Xiaohutian tracksite in the Upper Cretaceous
Xiaoyan Formation is the most interesting, being situated at a
historically famous location used as a Taoist and Buddhist shrine. The
Xiaohutian tracksite yields an assemblage with three different
morphotypes of non-avian theropod tracks including the new ichnotaxon
Paracorpulentapus zhangsanfengi that can be attributed to a theropod
with relatively short “fleshy” toes showing convergence with the
footprints of small ornithopods. A further diagnostic feature is the
trackway pattern with relatively short steps. Associated ichnofossils
are invertebrate traces that can be assigned to eurybathic forms such
as Palaeophycus and ?Planolites or ?Scoyenia. Thus far skeletal
remains from the Xiaoyan Formation have proved the pachycephalosaur
Wannanosaurus and indeterminate sauropods. The ichnoassemblages
enlarge the known dinosaur fauna by small- to medium-sized theropods
that are identified here as the trackmakers and that are otherwise
rare in Upper Cretaceous deposits of eastern China. The Shangshangen
locality is another significant tracksite which has yielded small bird
tracks (cf. Koreanaornis) in association with small tracks of
non-avian theropods.