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Name:
Chancelloria pentacta
Age: Cambrian
Formation: Wheeler Formation
Location: Millard County, Utah
Size: Chancelloria is 2.7 inches long
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Here is an unusual fossil invertebrate. It is a Chancelloria pentacta from 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 fossil has great form and exhibits excellent detail - the star-shaped sclerites are easily seen. The orangish-brown coloration is beautiful and fully natural. The fossil is well centered on the somewhat rectangular plate of shale. This is a very fine example of this odd Cambrian animal.
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