1. extinct marine mollusks with spiral shells that lived in ancient seas
Usage: paleontology
2. an ancient Semitic people who lived east of the Jordan River
Usage: biblical; historical

Examples

• The museum displayed fossilized ammonites from the Jurassic period.
• Paleontologists study ammonites to understand ancient ocean life.
• These ammonites show the spiral shell patterns typical of the species.
• The ammonites were enemies of the Israelites in biblical times.
• Archaeological evidence reveals settlements of the ammonites in Jordan.
• Ammonite fossils are commonly found in sedimentary rock layers.