Rank Genus | Class †Coeloscleritophora Phylum incertae sedis Order Chancelloriidae | |
Similar Chancelloria, Halkieriid, Diagoniella, Liangshanella, Hyolitha | ||
Allonnia is a genus of coeloscleritophoran known as complete scleritomes from the Middle Cambrian Burgess Shale. It is also a constituent of the small shelly fauna.
Its earliest occurrence in Yunnan dates to the Upper Meishucunian (~ Tommotian / Cambrian Stage 2)
References
Allonnia Wikipedia(Text) CC BY-SA