1. trilobite

noun. an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts.


  • -ite (English)
  • lobe (English)
  • lobe (French)
  • tri- (English)

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Sentences with trilobite

1. Adjective
If your fossil doesn't have a shell-like shape at all it might be a trilobite – these organisms look a bit like bugs.

2. Noun, singular or mass
Oklahoma is best know for its abundance of trilobite fossils.