Traits taxon details
original description
(of Undulatula (Ancyrunio) omegoides F.-X. Guo, 1985 †) Guo, F.-X. (1985). Fossil Bivalves of Yunnan. Yunnan Science and Technology Publishing House, Kunming, 319 pp. page(s): 182, pl. 40, figs 3, 4 [details] Available for editors 
basis of record
Fang, Z.-J.; Chen, J.-H.; Chen, C.-Z.; Sha, J.-G.; Lan, X.; Wen, S.-X. (2009). Supraspecific taxa of the Bivalvia first named, described, and published in China (1927-2007). <em>The University of Kansas Paleontological Contributions, New Series.</em> 17: 1-157. page(s): 78 [details] Available for editors 
|