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Name:
Chancelloria pentacta
Age: Cambrian
Formation: Wheeler Formation
Location: Millard County, Utah
Size: Largest Chancelloria is 3.5" long.
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These are unusual fossil invertebrates. They are 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 pair of organisms has superb detail - the star-shaped sclerites are easily seen with the naked eye. The fossils have nice color and contrast. They are well presented on the large, natural plate of shale. This is a very displayable multiple plate of this odd Cambrian animal.
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