Illustration of ammonite
am·mo·nite
ˈa-mə-ˌnīt 
: any of a subclass (Ammonoidea) of extinct cephalopods especially abundant in the Mesozoic age that had flat spiral shells with the interior divided by septa into chambers
Am·mon·ite
ˈa-mə-ˌnīt
: a member of a Semitic people who in Old Testament times lived east of the Jordan between the Jabbok and the Arnon
Ammonite
adjective
Examples of ammonite in a Sentence
Recent Examples on the Web
Ruth Franklin, The New Yorker, 2 Oct. 2023
For more than 2,000 years, Hinduism, Buddhism and the shamanic Himalayan religion of Bon have venerated Shaligrams – ancient fossils of ammonites, a class of extinct sea creatures related to modern squids.
—Holly Walters, The Conversation, 4 Aug. 2023
These included ichthyosaurs—dolphin-like reptiles—as well as turtles, fish, ammonites, crabs, mollusks, sharks, and at least one species of crocodyliform.
—Jeanne Timmons, Ars Technica, 23 Mar. 2023
Even the inexperienced are likely to find the 200-million-year-old shells of ammonites (extinct ancestors of mollusks) embedded in the rocks along the shore.
—Travel + Leisure Editors, Travel + Leisure, 10 Mar. 2023
Mary is tough and closed off, for example, like a shelled ammonite made hard as rock by external pressure.
—Josephine Livingstone, The New Republic, 27 Jan. 2021
The couple, who own a farm in nearby Hays, had previously collected ammonites and tiny bones while hiking through the shortgrass prairie.
—New York Times, 11 Feb. 2020
In addition, the amber contained the shells of squid-like critters called ammonites, which also lived in the sea.
—Matt Simon, Wired, 11 Mar. 2020
Giant mollusks with flanged shells that looked like alien cruisers disappeared forever, and many species of nautilus-like cephalopods called ammonites also went extinct.
—National Geographic, 18 Dec. 2019
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Noun
And her interest in fossils is linked from the start to her passionate attachment to another girl her own age who identifies an ammonite that the narrator finds on the beach.
—Ruth Franklin, The New Yorker, 2 Oct. 2023
For more than 2,000 years, Hinduism, Buddhism and the shamanic Himalayan religion of Bon have venerated Shaligrams – ancient fossils of ammonites, a class of extinct sea creatures related to modern squids.
—Holly Walters, The Conversation, 4 Aug. 2023
These included ichthyosaurs—dolphin-like reptiles—as well as turtles, fish, ammonites, crabs, mollusks, sharks, and at least one species of crocodyliform.
—Jeanne Timmons, Ars Technica, 23 Mar. 2023
Even the inexperienced are likely to find the 200-million-year-old shells of ammonites (extinct ancestors of mollusks) embedded in the rocks along the shore.
—Travel + Leisure Editors, Travel + Leisure, 10 Mar. 2023
Mary is tough and closed off, for example, like a shelled ammonite made hard as rock by external pressure.
—Josephine Livingstone, The New Republic, 27 Jan. 2021
The couple, who own a farm in nearby Hays, had previously collected ammonites and tiny bones while hiking through the shortgrass prairie.
—New York Times, 11 Feb. 2020
In addition, the amber contained the shells of squid-like critters called ammonites, which also lived in the sea.
—Matt Simon, Wired, 11 Mar. 2020
Giant mollusks with flanged shells that looked like alien cruisers disappeared forever, and many species of nautilus-like cephalopods called ammonites also went extinct.
—National Geographic, 18 Dec. 2019
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“Ammonite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ammonite. Accessed 29 Nov. 2023.
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ammonite
noun
am·mo·nite
ˈam-ə-ˌnīt
: any of numerous flat spiral fossil shells of mollusks related to the nautilus that are especially abundant in the Mesozoic era of geological history
More from Merriam-Webster on ammonite
Britannica.com: Encyclopedia article about ammonite
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