The Paleontology of North America

The Cambrian in Iowa, US

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See exposures in this state from the:

Quaternary
Tertiary
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Precambrian

Cambrian Fossils

No slide show is available for the Cambrian in Iowa.

Paleontology and geology

A shallow sea flooded what is now Iowa during Late Cambrian time. The layers of sedimentary rock of this age represent deposition along shoreline, shallow marine shelf, and offshore shelf environments. Cambrian rocks are exposed best in far northeastern Iowa, in a topographic region called the Paleozoic Plateau. Although not abundant, fossils of inarticulate brachiopods, trilobites, algae, and burrows of wormlike organisms have been found in some of the state’s Cambrian rocks.

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