The Marjum Formation is a
Cambrian
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...
geological formation that overlies the
Wheeler Shale in the
House Range,
Utah. It 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.
References
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Cambrian geology of Utah
Cambrian southern paleotropical deposits