Coronacollina acula is a multicellular organism from the Ediacaran period resembling the Cambrian 'sponge' Choia. The organism comprised a raised, tri-radially-symmetrical central mound with a central depression and resistant spicules (up to four in articulated fossils), which were resistant — either chitinous or biomineralized — and grew to be 37 cm long.[1]

Coronacollina acula
Temporal range: Ediacaran, about 555 Ma
Artist restoration of Coronacollina acula
Scientific classification
Kingdom:
Phylum:
Genus:
Coronacollina

Clites et al., 2012
Species:
C. acula
Binomial name
Coronacollina acula
Clites et al., 2012

References

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  1. ^ Erica C. Clites, Mary L. Droser & James G. Gehling (2012). "The advent of hard-part structural support among the Ediacara biota: Ediacaran harbinger of a Cambrian mode of body construction". Geology. 40: 307–310. doi:10.1130/G32828.1.
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