Definition

A type of fossilized shell from an extinct sea creature that had a coiled shape and lived a long time ago, especially during the time of dinosaurs.

Example

The ammonite fossils found in the cliffside provide valuable insights into prehistoric marine life.

Conversation

Have you ever seen an ammonite fossil before?

No, I haven't, but I've heard they look really unique.

They do! Their spiral shape is fascinating and so ancient.

I would love to find one on a trip to the beach.

Synonyms & Antonyms

Root Explanation

Ammonite is derived from the Latin 'ammonites', which comes from the Greek 'ammonitēs' (meaning related to Ammon), named after the Egyptian god Ammon, whose ram's horns resemble the coiled shape of the ammonite fossil. The term refers to the fossilized remains of a marine mollusk with a distinctive spiral shell.

Memory Tip

Think of the Egyptian god Ammon, whose ram's horns look like the coiled shape of the ammonite fossil. This helps you remember that an ammonite is a type of fossil with a spiral shell.

Visually Confused Words