American Heritage Dictionary
(1)
Century Dictionary
(2)
GNU Webster's 1913
(1)
WordNet
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Elsewhere on the web
Ammonite: 'The ammonite looks like it would be related to spiral-shelled creatures, but have I got a whopper of a surprise for you!— IGN Complete
Christie's is auctioning this stunning 100-million-year-old iridescent ammonite fossils excavated from the Bearpaw Formation, in southern Alberta, Canada:— Neatorama
I saw all types of fossils - ammonite, root fossils, antropods - the whole place used to be covered by the ocean.— TravelPod.com Recent Updates
And the place is full of nice subtle touches, like the wall in one of the upper floors with embedded ammonite sections, pyrite crystals, and leaf imprints.— The Berkeley Daily Planet, The East Bay's Independent Newspaper
Her forward elbow is propped upon one knee; and to keep her secrets close, for this Libyan woman is the closest of all the Sibyls, she rests her shut mouth upon one closed palm, as if holding the African mystery deep in the brooding brain that looks out through mournful, warning eyes, seen under the wide shade of the strange horned (ammonite) crest, that bears the mystery of the Tetragrammaton upon its upturned front.— Martin Luther King, Jr. Day, 1995, Memorial Issue

American Heritage Dictionary (1)
Century Dictionary (2)
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