Name:
Chancelloria pentacta
Age: Middle Cambrian
Formation: Wheeler Formation
Location: Millard County, Utah
Size: Chancelloria is almost 2.5 inches long
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This is an unusual fossil invertebrate. It is a Chancelloria pentacta from the Cambrian of Utah. This type of animal is sort of an enigma, and has been found in the Burgess Shale fauna. It was first thought to be a "glass sponge", but it has now been described as a "coeloscleritophoran". This specimen has excellent cylindrical form and exhibits outstanding detail - the star-shaped sclerites are clearly defined and easily seen with the naked eye. The fossil has beautiful, natural, reddish-brown color and is well positioned on the plate of gray shale. This is a very pretty example of this odd Cambrian animal.
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