Ordovician-Silurian extinction: References & Edit History
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Article Contributors
Primary Contributors
-
Steven M. Holland
Professor of Geology, University of Georgia, Athens.
Other Contributors
- Rasoul Shiri
Other Encyclopedia Britannica Contributors
Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Links added. | Aug 03, 2023 | ||
| Link added. | Jun 01, 2023 | ||
| Added a photograph of brachiopod fossils. | Jun 01, 2020 | ||
| Add new Web site: National Center for Biotechnology Information - PubMed Central - Rapid recovery from the Late Ordovician mass extinction. | Nov 26, 2018 | ||
| Media added. | Mar 22, 2017 | ||
| Geologic boundary years updated. |
|
Sep 10, 2015 | |
| Updated geologic time data. | Apr 20, 2010 | ||
| New article added. | Apr 22, 2009 |
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