[ˈamənʌɪt], (Noun)

Definitions:
- an ammonoid fossil, especially one of a later type found chiefly in the Jurassic and Cretaceous periods, typically with intricately frilled suture lines


Phrases:

Origin:
early 18th century: from modern Latin ammonites, after classical Latin Ammonis cornu ‘horn of Ammon’, from the fossil's resemblance to the ram's horn associated with Jupiter Ammon (see ammoniacal)