ammonoid: References & Edit History
More Articles On This Topic
- molluskAnnotated classification
- cephalopodAnnotated classification
- Carboniferous PeriodInvertebrates
- Cretaceous PeriodCorrelation
- Cretaceous PeriodMarine life
- Devonian PeriodInvertebrates
- cephalopodEvolution and paleontology
- Jurassic PeriodProtists and invertebrates
- geochronologyStages and zones
- K–T extinction
- Paleozoic EraPaleozoic geography
- Triassic Period
- Triassic PeriodEnd-Triassic extinctions
Article Contributors
Primary Contributors
-
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
Other Encyclopedia Britannica Contributors
Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Add new Web site: PNAS - Evidence from ammonoids and conodonts for multiple Early Triassic mass extinctions. | Oct 10, 2026 | ||
| Add new Web site: University of Zurich - Fossil Focus: Ammonoids (PDF). | May 02, 2025 | ||
| Add new Web site: CiteSeerX - Metalloid group 14 cluster compounds: An introduction and perspectives to this novel group of cluster compounds (PDF). | Mar 09, 2025 | ||
| Add new Web site: CiteSeerX - The origin of ammonoid locomotion. | Nov 15, 2024 | ||
| Add new Web site: Scientific Reports - Reproductive biology and anatomy of ammonites. | Oct 01, 2024 | ||
| Add new Web site: CALS Encyclopedia of Arkansas - Ammonites. | Aug 06, 2024 | ||
| Add new Web site: The University of utah - attheU - Ancient ammonoids? shell designs may have aided buoyancy control. | Jun 13, 2024 | ||
| Add new Web site: British Geological Survey - Ammonites. | Mar 22, 2024 | ||
| Add new Web site: PNAS - Evolution of habitat depth in the Jurassic�Cretaceous ammonoids. | Feb 08, 2024 | ||
| Add new Web site: Academia - Ammonite biogeography: From descriptive to dynamic, ecological interpretations. | Dec 19, 2023 | ||
| Add new Web site: University of Kansas - Kansas Geological Survey - Ammonoids. | Sep 14, 2023 | ||
| Add new Web site: Natural History Museum - What is an ammonite? | Jul 25, 2023 | ||
| Add new Web site: Natural History Museum - What is an ammonite? | Mar 07, 2023 | ||
| Add new Web site: Paleontological Research Institution - Digital Atlas of Ancient Life - Ammonoidea. | Jan 27, 2023 | ||
| Replaced photograph. | May 28, 2014 | ||
| Text considering the ammonoid diet and the possible cause of ammonoid extinction added. | Jan 18, 2011 | ||
| Added image of Jurassic ammonite fossils. | Aug 25, 2010 | ||
| Added new Web site: National Geographic - Ammonites. | Sep 04, 2008 | ||
| Article revised and updated. | Aug 08, 2008 | ||
| Added new Web site: How Stuff Works - Animals - Ammonite. | May 28, 2008 | ||
| Added new Web site: Ammonites. | Dec 07, 2006 | ||
| Article added to new online database. | May 27, 1999 |
View Changes:
Article History
Revised:
By: