Traits taxon details
original description
Jin, Y. G.; Ye, S. L.; Xu, H. K.; Sun, D. L. (1979). Brachiopoda. pp. 60–217, pls 18–57. In: Institute of Geological Science of Qinghai Province & Nanjing Institute of Geology and Palaeonotology, Chinese Academy of Sciences (Eds.). <em>Paleontological atlas of northwestern China, Qinghai Province, Volume 1.</em> Geological Publishing House, Beijing. note: Originally described as a subspecies of genus Zygospira, p. 109. [details]
basis of record
Popov, L. E.; Nikitin, I. F.; Sokiran, E. V. (1999). The earliest atrypides and athyridides (Brachiopoda) from the Ordovician of Kazakhstan. <em>Palaeontology.</em> 42(4): 625-661, 4 plates. [details]
|