Bonanza King Formation
1,000 foot thick. Another chemically precipitated dolomite formed in a marine setting. The dark rock is carbonate, while the white material is fecal matter from worms. 500 million years old.
Phanerzoic eon > Paleozoic era > Cambrian period > Furongian epoch > Paibian age
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Bonanza King Formation
Fossil Notes
The only fossiliferous bed is shale below limestone member neat middle of formation. This shale contains linguloid brachiopods and trilobite trash beds with fragments of Ehmaniella.