original description
Grabau, A.W. (1923). Cretaceous fossils from Shantung. <em>Bulletin of the Geological Survey of China.</em> 5(2): 143-181.
page(s): 159, fig. 6f [details]
From editor or global species database
Type locality "In the Wangshih formation of the Upper Cretaceous of Chioa-Hsien, east Shantung" [Shandong Province, China] [details]