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Marjum Formation

The Marjum Formation is a Cambrian geological formation that overlies the Wheeler Shale in the House Range, Utah. It is named after its type locality, Marjum Pass, and was defined in 1908. The formation is known for its occasional preservation of soft-bodied tissue, and is slightly younger than the Burgess Shale, falling in the Ptychagnostus praecurrens trilobite zone.

Fossil content
Ambulacrarians Arthropods Chancelloriids Chordates Cnidarians Moon, Caron & Moysiuk (2023) considered these fossils would be ctenophores instead. Ctenophores Lophotrochozoans Scalidophorans Sponges ==See also==
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