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
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Nina Turner, Newsweek, 29 Oct. 2024
The exhibition achieves that goal with a thoughtful and heady combination of nearly 200 scientific and literary publications; artworks; and loans, including ammonites, trilobites and a cast of an ichthyosaurus skull.
—Anne Wallentine, Smithsonian Magazine, 8 Oct. 2024
Other mosasaur species preferred to dine on ammonites.
—Riley Black, Smithsonian Magazine, 2 May 2024
One hundred and thirty million years ago, countless ammonites of all shapes and sizes swam in the proto-Caribbean Sea alongside fishes and enormous marine predators.
—Santiago Flórez, Smithsonian Magazine, 6 Feb. 2024
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Noun
Most commonly seen in marine fossils, such as ammonites or trilobites, pyritization can produce highly detailed, metallic-looking fossils that are both scientifically valuable and visually striking.
—Nina Turner, Newsweek, 29 Oct. 2024
The exhibition achieves that goal with a thoughtful and heady combination of nearly 200 scientific and literary publications; artworks; and loans, including ammonites, trilobites and a cast of an ichthyosaurus skull.
—Anne Wallentine, Smithsonian Magazine, 8 Oct. 2024
Other mosasaur species preferred to dine on ammonites.
—Riley Black, Smithsonian Magazine, 2 May 2024
One hundred and thirty million years ago, countless ammonites of all shapes and sizes swam in the proto-Caribbean Sea alongside fishes and enormous marine predators.
—Santiago Flórez, Smithsonian Magazine, 6 Feb. 2024
See all Example Sentences for ammonite
Dictionary Entries Near ammonite
Cite this Entry
“Ammonite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ammonite. Accessed 26 Nov. 2024.
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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
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