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Named By: Dore & Reid in 1965
Time Period: Cambrian Stage 2-Middle Cambrian
Location: Antarctica - Cape Melville Formation. Australia - Coobowie Limestone Formation, Kulpara Formation, Parara Limestone Formation. China. Jordan - Burj Formation
Size: Unavailable
Diet: unavailable
Fossil(s): Numerous specimens
Classification: | Animalia | Coeloscleritophora | Chancelloriida | Chancelloriidae |
Also known as: | Dimidia | Onychia | Rosella | Zhurinia |

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)

Read more about Allonnia at Wikipedia
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