Dug out of the earth; as, fossil coal; fossil salt.
Open English WordNet identifies the related term as a broader lexical category for at least one sense.
A fossil cephalopod shell related to the nautilus. There are many genera and species, and all are extinct, the typical forms having existed only in the Mesozoic age, when they were exceedingly numerous. They differ from the nautili in having the margins of the septa very much lobed or plaited, and the siphuncle dorsal. Also called serpent stone, snake stone, and cornu Ammonis.
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Dug out of the earth; as, fossil coal; fossil salt.
Open English WordNet identifies the related term as a broader lexical category for at least one sense.
These terms belong to the same specialist field or topic. They help you explore the subject, but they are not automatically synonyms.
Their definitions overlap or refer to similar ideas. Use these to widen your search, then compare the exact meanings.
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