The Paleontology of North America

The Ordovician in New Jersey, US

 map

undifferentiated rock units

See exposures in this state from the:

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

Ordovician Fossils
Fossil photos from Ordovician in New Jersey

Paleontology and geology

During the Ordovician Period in New Jersey, shallow seas gave way to deeper oceanic conditions. The shallow water limestones and their reef-building organisms were replaced by dark colored shales and mudstones and organisms typical of a deep-water environment. This change between environments is evident in the Valley and Ridge Province of northwestern New Jersey.

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