dictionary.pt
ammonite
nounmasculine/femininetechnicalrare/ɐmuˈnitɨʃ/a·mo·ni·tes
Definitions
2-1
Fossil of an extinct cephalopod mollusc with a coiled shell, common in Mesozoic rocks.
Usage examples
“They found several ammonites in the Jurassic cliff.”
“Ammonites are important index fossils.”
Common combinations
ammonite fossilammonite shellJurassic ammonite
1
Fossil of an extinct cephalopod mollusk, of the subclass Ammonoidea, with a usually spiral shell, common in sedimentary rocks.
Usage examples
“They found several ammonites in that limestone layer.”
“Ammonites are important index fossils.”
Synonyms
Common combinations
ammonite fossilammonite shellJurassic ammonites