Eldonia sp.

• Eldonia is an extinct organism whose fossils are found in the Cambrian strata.

• With no known phylum, this soft-bodied creature had a UFO shape with a spiraling C-shaped gut in its middle. Short tentacles near its mouth were probably used for eating fragments on the sea floor.

• Eldonia was originally designated under the class, Holothuroidea, relating to sea cucumbers, but many other theories have arisen.

• There is no clear consensus on whether Eldonia was free-floating, fixed in one location or could move periodically.

Reference:
Royal Ontario Museum. (2023b, July 10). Eldonia Ludwigi. The Burgess Shale. https://burgess-shale.rom.on.ca/fossils/eldonia-ludwigi/