SCIENCETECH · HISTORICAL MARKER

Green Point

Newfoundland, Newfoundland and Labrador
· Cambrian-Ordovician Boundary / La limite Cambrien-Ordovicien
Science & Tech
3
In 2000, the International Commission of Stratigraphy designated Green Point as the global stratotype for the boundary between the Cambrian and Ordovician systems. The boundary is located within a bed of shale and limestone, Bed 23, exposed in the southwest facing cliff and shore platform. It is marked by the first appearance of the conodont fossil Iapetognathus fluctivagus, 4.8 meters below the oldest known planktic graptolite fossils. The site lies within Gros Morne National Park, where no collecting or scientific study is allowed without a permit.
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Newfoundland and Labrador · Canada
Newfoundland, Newfoundland and Labrador
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