Difference between revisions of "Bipolaribucina biornata"

Revision as of 14:19, 2 December 2016

"?biornata" He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, p.39, pl.22, figs.18-19.  Holotype: He Chengquan et al., 1989, pl.22, fig.18.  NOW Songiella.  Originally Bipolaribucina?, subsequently Distatodinium, thirdly (and now) Songiella.  Questionable assignment: He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al. (1989, p.39).  Taxonomic senior synonym: Membranilarnacia paucitubata, according to Mao Shaozhi et al. (1995, p.44) - however, He Chengquan et al. (2009, p.366) retained this species as Songiella biornata.  Age: early Tertiary.