were ultimately abandoned and left to weather in situ. Excavation of the specimen did not begin until 1957, when a team from the Sichuan Provincial Museum was dispatched to the site. Preparation, reconstruction, mounting, and description of the skeleton were completed in 1965.

The holotype specimen (CCG V 20401) consisted of an almost complete and articulated vertebral column, including 19 elongated cervical vertebrae, which were almost entirely preserved, 12 dorsal vertebrae, four sacral vertebrae,