[D] Yueosaurus tiantaiensis [sG] [T]
Describer
Zheng, Jin, Shibata, Azuma & Yu 2011
Time
Cretaceous Early Cretaceous Late Aptian Albian Cenomanian
Classification
Ornithischia Ornithopoda
Diet
Herbivore
Fossilsite
Liangtoutang Formation, Tiantai locality, Zhejiang Province, China
Info
Abstract
A new ornithischian dinosaur, Yueosaurus tiantaiensis gen. et sp. nov., is erected based on a partial postcranial skeleton from the Liangtoutang Formation (Aptian–Cenomanian) of Zhejiang Province, China.
It differs from other ornithischians in possessing the following unique combination of characters: prominent and slightly ventrally directed cervical parapophyses; anteroposteriorly narrow neural spines on caudal vertebrae; scapula with a ventroscapular groove, supraglenoidal buttress, supraglenoid fossa, and a strong anteroventral expansion of the scapular blade. Yueosaurus represents the first basal ornithopod taxon from southeastern China. It expands our understanding of the Cretaceous dinosaurian fauna of Zhejiang Province.
Etymology
The generic name derives from “Yue”, an ancient name for Zhejiang | The specific name refers to the Tiantai, where the holotype was discovered
Holotype
ZMNH M8620 (Fig. 2, Table 1) consists of a partial postcranial skeleton including six posterior cervical vertebrae, five anterior dorsal vertebrae, two middle dorsal vertebrae, nine caudal vertebrae, rib fragments, chevrons, a right scapula, a partial left forelimb, a partial pelvis, and a partial right hindlimb. The specimen is housed in the Zhejiang Museum of Natural History, Hangzhou City, Zhejiang Province, China.
Type locality
The construction site of the G15W (Shangsan) Expressway beside the factory of Zhejiang InBev Shiliang Beer Co. Ltd., Tiantai County, Zhejiang Province
Diagnosis
A small ornithischian dinosaur distinguished by the following unique combination of characters including autapomorphies (marked *) within basal Ornithopoda: prominent and slightly ventrally directed cervical parapophyses; slender and posteriorly inclined caudal neural spines; *anteroventral expansion of the scapula exceeds its posteroventral expansion, and its posterior edge is almost perpendicular to the shaft; *scapula bears a distinctive ventroscapular groove; *scapula also possesses both a supraglenoidal buttress and supraglenoid fossa; distal fibula anteroposteriorly compressed and tightly appressed to the tibia.
Stratigraphic horizon
Albian–Cenomanian, Liangtoutang Formation.
Diagnosis
A small ornithischian dinosaur distinguished by the following unique combination of characters including autapomorphies (marked *) within basal Ornithopoda: prominent and slightly ventrally directed cervical parapophyses; slender and posteriorly inclined caudal neural spines; *anteroventral expansion of the scapula exceeds its posteroventral expansion, and its posterior edge is almost perpendicular to the shaft; *scapula bears a distinctive ventroscapular groove; *scapula also possesses both a supraglenoidal buttress and supraglenoid fossa; distal fibula anteroposteriorly compressed and tightly appressed to the tibia.
Zheng, Jin, Shibata, Azuma & Yu 2011
Time
Cretaceous Early Cretaceous Late Aptian Albian Cenomanian
Classification
Ornithischia Ornithopoda
Diet
Herbivore
Fossilsite
Liangtoutang Formation, Tiantai locality, Zhejiang Province, China
Info
Abstract
A new ornithischian dinosaur, Yueosaurus tiantaiensis gen. et sp. nov., is erected based on a partial postcranial skeleton from the Liangtoutang Formation (Aptian–Cenomanian) of Zhejiang Province, China.
It differs from other ornithischians in possessing the following unique combination of characters: prominent and slightly ventrally directed cervical parapophyses; anteroposteriorly narrow neural spines on caudal vertebrae; scapula with a ventroscapular groove, supraglenoidal buttress, supraglenoid fossa, and a strong anteroventral expansion of the scapular blade. Yueosaurus represents the first basal ornithopod taxon from southeastern China. It expands our understanding of the Cretaceous dinosaurian fauna of Zhejiang Province.
Etymology
The generic name derives from “Yue”, an ancient name for Zhejiang | The specific name refers to the Tiantai, where the holotype was discovered
Holotype
ZMNH M8620 (Fig. 2, Table 1) consists of a partial postcranial skeleton including six posterior cervical vertebrae, five anterior dorsal vertebrae, two middle dorsal vertebrae, nine caudal vertebrae, rib fragments, chevrons, a right scapula, a partial left forelimb, a partial pelvis, and a partial right hindlimb. The specimen is housed in the Zhejiang Museum of Natural History, Hangzhou City, Zhejiang Province, China.
Type locality
The construction site of the G15W (Shangsan) Expressway beside the factory of Zhejiang InBev Shiliang Beer Co. Ltd., Tiantai County, Zhejiang Province
Diagnosis
A small ornithischian dinosaur distinguished by the following unique combination of characters including autapomorphies (marked *) within basal Ornithopoda: prominent and slightly ventrally directed cervical parapophyses; slender and posteriorly inclined caudal neural spines; *anteroventral expansion of the scapula exceeds its posteroventral expansion, and its posterior edge is almost perpendicular to the shaft; *scapula bears a distinctive ventroscapular groove; *scapula also possesses both a supraglenoidal buttress and supraglenoid fossa; distal fibula anteroposteriorly compressed and tightly appressed to the tibia.
Stratigraphic horizon
Albian–Cenomanian, Liangtoutang Formation.
Diagnosis
A small ornithischian dinosaur distinguished by the following unique combination of characters including autapomorphies (marked *) within basal Ornithopoda: prominent and slightly ventrally directed cervical parapophyses; slender and posteriorly inclined caudal neural spines; *anteroventral expansion of the scapula exceeds its posteroventral expansion, and its posterior edge is almost perpendicular to the shaft; *scapula bears a distinctive ventroscapular groove; *scapula also possesses both a supraglenoidal buttress and supraglenoid fossa; distal fibula anteroposteriorly compressed and tightly appressed to the tibia.