noun
- extinct marine arthropods that lived in ancient seas, characterized by segmented bodies divided into three lobes
Usage: paleontology
Examples
- Trilobites were among the most successful early animals on Earth.
- The museum displayed fossilized trilobites from the Cambrian period.
- Scientists have identified over 20,000 species of trilobites.
- Trilobites had compound eyes and segmented exoskeletons.
- These ancient trilobites lived on the ocean floor millions of years ago.
- The trilobite fossil showed remarkable preservation of detail.