| Trepassey Formation Stratigraphic range: Ediacaran |
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| Type | Formation |
| Unit of | St John's Group |
| Underlies | Fermeuse Formation |
| Overlies | Mistaken Point Formation |
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Occurrence in southeast NL |
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The Trepassey Formation is a geologic formation that crops out in Newfoundland. It preserves fossils dating back to the Ediacaran period.