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Spence Shale

Member of the Langston Formation in Idaho and Utah, United States From Wikipedia, the free encyclopedia

Spence Shale
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The Spence Shale is the middle member of the Langston Formation in southeastern Idaho and northeastern Utah. It is exposed in the Bear River Range, the Wasatch Range and the Wellsville Mountains. It is known for its abundant Cambrian trilobites and the preservation of Burgess Shale-type fossils.[1]

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The type locality is Spence Gulch in southeastern Idaho, near the town of Liberty. It was first described by Charles Doolittle Walcott in 1908.[2]

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Stratigraphy

The Spence Shale spans the Albertella and Glossopleura biozones.[3]

Fauna

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Generic list of the fauna of the Spence Shale:[4][5][6]

Arthropoda

Soft-bodied

Agnostida

Trilobita

Brachiopoda

Mollusca

Lophotrochozoa

Echinodermata

Hemichordata

Priapulida

Lobopodia

Porifera

Problematica

Algae

Cyanobacteria

Trace Fossils

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See also

References

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