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Dongyang, China

Azuma Y.,Zhejiang Museum of Natural History | Azuma Y.,Chinese Academy of Geological Sciences | Lu J.,Chinese Academy of Geological Sciences | Jin X.,Zhejiang Museum of Natural History | And 4 more authors.
Cretaceous Research | Year: 2013

A new Cretaceous bird ichnotaxon, Dongyangornipes sinensis ichnogen. et ichnosp. nov., is described. It is the first record of a webbed bird footprint in China. It was recovered from the early Late Cretaceous Jinhua Formation in Dongyang City, Zhejiang Province. It is characterized by comparatively small tridactyl footprints with a notably developed web structure without a hallux impression. The web impression of digits II-III is connected from the apex of digit II to the posterior third of digit III, whereas that between digits III and IV is linked from the apex of digit IV to the mid-point of digit III. Webbed footprints of Cretaceous birds have not been described previously from outside South Korea. Shorebird footprints without webbing, referred to Koreanaornis cf. hamanensis, are also present at the same site. The Dongyang bird footprint site is the southernmost locality of Mesozoic bird track sites in Asia. © 2012.

Chen R.,Dongyang Museum | Zheng W.,Zhejiang Museum of Natural History | Azuma Y.,Zhejiang Museum of Natural History | Shibata M.,Fukui Prefectural Dinosaur Museum | And 3 more authors.
Acta Geologica Sinica | Year: 2013

Dongyangopelta yangyanensis gen. et sp. nov. from the Chaochuan Formation (Albian - Cenomanian) of Dongyang, Zhejiang Province, China is characterized: the convex anterior surface of the first presacral rod centrum strongly inflates laterally and sUghtly curves posteriorly; the fused pelvic shield composes of larger pebble-shaped bosses, defined by smaller tubercles or flat stretches of bone; most osteoderms are heavily roughened with notches and grooves for dermal attachment along the edge; domed triradiate osteoderm is present; sigmoid curvature of the dorsal surface of the ilium is present; the preacetabular process curves lateroventrally at the anterior end and has a shallow groove in the edge of the lateral and anterior ends and strong lateromedial expansion of the distal femur. The femoral head is well separated from the greater trochanter, indicating that Dongyangopelta is a nodosaurid ankylosaur, the second from southeast China. Phylogenetic analysis also positions this taxon in the Nodosauridae clade. Dongyangopelta differs from Zhejiangosaurus in the characters of presacral rod, ilium, and femur. Dongyangopelta represents the first ankylosaur outside North America and Europe that definitively possesses a pelvic shield with fused armor.

Chen R.-J.,Dongyang Museum | Lu J.-C.,Chinese Academy of Geological Sciences | Zhu Y.-X.,Dongyang Museum | Azuma Y.,Chinese Academy of Geological Sciences | And 4 more authors.
Geological Bulletin of China | Year: 2013

A new pterosaur ichnotaxon, Pteraichnus dongyangensis inchnosp. nov., is proposed for the discovery of four pterosaur tracks from the Jinhua Formation of Dongyang City, Zhejiang Province of China. It is characterized by manus imprints with 29° of divarication of digits II and III and that of the digits I and II is 52°. Ratio of width to length of the pes imprint is 0.17. With pterosaur, sauropod, theropod and ornithopod footprints, webbed and non-webbed bird footprints are also found from the same quarry. These footprints will provide important evidence for the study of the paleoenvironments and the discovery of the bone elements of these footprint-makers, especially the pterosaur skeletons in the near future.

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