The Paleontology of North America

The Silurian in Montana, US

map

undifferentiated rock units

See exposures in this state from the:
Quaternary
Tertiary
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Precambrian

Silurian Fossils

No slide show is available for the Silurian in Montana.

Paleontology and geology

Very little remains of any Silurian rocks in Montana due to high rates of erosion in the Devonian. There are subsurface rock layers in the state that record the presence of shallow, warm seas covering the eastern third of the state. Fossils of marine life from drill cores include corals, gastropods, brachiopods, stromatoporoids, and algal mats.
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