- Source: Coronacollina acula
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.
References
External links
"Oldest organism with skeleton discovered in Australia". ScienceDaily. March 8, 2012.
Charles Choi (March 8, 2012). "Meet Earth's earliest animal with a skeleton". MSNBC. Archived from the original on January 7, 2014.